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Trim Vladivostok

#1b5ea3
Notes

Trim Vladivostok (#1B5EA3) is a true azure 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 (210°, 72%, 37%) 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 orange. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#1b5ea3
RGB
rgb(27, 94, 163)
HSL
hsl(210, 72%, 37%)
HWB
hwb(210 11% 36%)
OKLCH
oklch(47.8% 0.129 253.0)
P3
color(display-p3 0.1859 0.3633 0.6195)
HSV
hsv(210, 83%, 64%)
LAB
lab(39.38% 5.42 -43.02)
LCH
lch(39.38% 43.36 277.18)
CMYK
cmyk(83%, 42%, 0%, 36%)

Etymology

Trim
adjective

Old English trymman, to make firm — sharing root with firm. As a color modifier, trim implies a clear-and-neatly-arranged quality where the hue carries the visual register of carefully-edited surface-detail. Sits at the crisp-and-neat end of the grid, parallel to neat and tidy in usage.

Vladivostok
noun

The Russian Pacific Far East port city — and the saturated deep blue of Amursky Bay and Vladivostok Harbor on the Sea of Japan. Vladivostok refers to the harbor water at midday: a saturated, slightly cool deep blue with the optical depth of cold-water Pacific port.

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.

#1b5ea3
Original
#3b63a6
Protanopia
#2357a2
Deuteranopia
#006e78
Tritanopia
#555555
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).
AAon White
6.61:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AA Largeon Black
3.18:1

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
##1B5EA3
Display P3
Display P3
color(display-p3 0.1859 0.3633 0.6195)
P3 has subtle headroomOKLCH chroma 0.129

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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