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Velvet Caraway Ultramarine

#23388e
Notes

Velvet Caraway Ultramarine (#23388E) is a true blue with a jewel character. It carries the deep, saturated richness of a gemstone. Authoritative and slightly formal, it works well for type and heavy UI elements. Its HSL profile (228°, 60%, 35%) places it in the balanced band at a mid lightness. It works across type, buttons, and borders, saturated enough to feel deliberate but balanced enough to not fight the rest of the palette. For a confident two-color system, pair it with its complementary amber. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#23388e
RGB
rgb(35, 56, 142)
HSL
hsl(228, 60%, 35%)
HWB
hwb(228 14% 44%)
OKLCH
oklch(38.1% 0.145 268.2)
P3
color(display-p3 0.1553 0.2174 0.5365)
HSV
hsv(228, 75%, 56%)
LAB
lab(27.12% 23.58 -50.06)
LCH
lch(27.12% 55.34 295.23)
CMYK
cmyk(75%, 61%, 0%, 44%)

Etymology

Velvet
noun

A short-pile woven fabric — silk, cotton, or rayon — whose densely packed vertical fibers absorb almost all incident light, producing a deeper black than the dye alone could give. The color refers to a black silk velvet: a deep, slightly muted black with the velvet's signature optical depth and the directional shading that distinguishes it from any flat fabric. Cooler than sable, deeper than ink.

Caraway
modifier

Arabic al-karawiyā, aromatic-rye-bread-seed. As a color modifier, caraway implies an aromatic-rye-bread-and-Central-European-seed quality, the visual register of Bavarian-and-Central-European-caraway hand-aromatic-rye-bread-and-Central-European-seed Bavarian-and-Central-European-caraway-and-Czech-and-Hungarian-rye caraway-and-aromatic-rye-bread surfaces under Bavarian-and-Central-European-caraway-and-Czech-and-Hungarian-rye Bavaria-and-Bohemia-and-Hungary Central-European-rye-light. Sits at the modifier-and-flavor end of the grid, parallel to cumin and anise in usage.

Ultramarine
noun

The pigment ground from lapis lazuli — the Afghan mineral imported through Venice in the late Middle Ages, more expensive by weight than gold during the Renaissance. The color refers to a freshly mixed ultramarine pigment in linseed oil: a saturated, slightly violet-shifted deep blue with the matte finish of micron-ground rock. Deeper than cobalt, cooler than royal, with the art-historical weight of the blue Vermeer reserved for Mary's robe.

Closest matches

The nearest named color in three reference sources, ranked by perceptual distance (ΔE76 in CIELAB). ΔE < 1 is imperceptible to most viewers; ΔE > 10 is clearly different. When two sources point to the same hex they’re merged into one tile; click any to open that color’s page.

Variations

Click any swatch to explore

Harmonies

Accessibility

Color-vision simulation

How this color appears to viewers with the four major color-vision-deficiency types. Computed via the Machado (2009) physiologically-based model. If a tile matches the original, the color reads the same to that viewer.

#23388e
Original
#004591
Protanopia
#003b8c
Deuteranopia
#004e5d
Tritanopia
#3a3a3a
Achromatopsia
WCAG contrast

The color used as foreground text against pure white and pure black, with the contrast ratio and WCAG 2.1 grade. Aim for AA (4.5:1) for body text and AA Large (3:1) for 18 pt+ headlines; AAA (7:1) is the gold standard for long-form reading surfaces.

The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAAon White
10.36:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
Failon Black
2.03:1

Wide gamut

Display P3 representation

The CSS Color 4 wide-gamut form of this color. Both swatches render the same color on every display — the P3 form only diverges from sRGB when a designer pushes channels outside sRGB's reach.

sRGB hex
sRGB hex
##23388E
Display P3
Display P3
color(display-p3 0.1553 0.2174 0.5365)
P3 has subtle headroomOKLCH chroma 0.145

Moderately saturated colors gain a small bump in P3 — the difference is usually visible side-by-side on wide-gamut hardware but won't change the character of the color.

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