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Pithed Anchusa

#04333b
Notes

Pithed Anchusa (#04333B) is a deep cyan 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 (189°, 87%, 12%) places it in the highly saturated band at a dark lightness. Best used in small doses, like logos, CTAs, focus rings, or highlight text, where its saturation becomes a feature rather than noise. For a confident two-color system, pair it with its complementary red. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#04333b
RGB
rgb(4, 51, 59)
HSL
hsl(189, 87%, 12%)
HWB
hwb(189 2% 77%)
OKLCH
oklch(29.6% 0.049 212.2)
P3
color(display-p3 0.0775 0.1966 0.2272)
HSV
hsv(189, 93%, 23%)
LAB
lab(18.84% -11.60 -9.35)
LCH
lch(18.84% 14.90 218.88)
CMYK
cmyk(93%, 14%, 0%, 77%)

Etymology

Pithed
adjective

Old English piþa, pith / inner stalk — past-participle of pith. As a color modifier, pithed implies a deep-and-cored-out quality where the visual surface has been excavated to reveal interior darkness. Sits at the deep-and-architectural end of the grid, parallel to hollowed and cored.

Anchusa
noun

The genus Anchusa — Mediterranean borage-family perennials with saturated deep-blue flower spikes used in Renaissance European herbal medicine. The color refers to a fresh A. azurea (Italian bugloss) flower spike: a saturated, slightly cool deep blue with the matte finish of small five-petaled forget-me-not-style flowers.

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.

#04333b
Original
#2d313b
Protanopia
#262c3b
Deuteranopia
#003635
Tritanopia
#2a2a2a
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
13.62:1
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
1.54:1

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
##04333B
Display P3
Display P3
color(display-p3 0.0775 0.1966 0.2272)
Inside sRGBOKLCH chroma 0.049

This color sits well within the sRGB cube. P3 and sRGB share the gray axis and most desaturated tones, so a P3 display renders this identically to an sRGB display.

Related Colors

Canvas