#255481
Closest named color: Deep Sea Blue (#015482). oklch(43.6% 0.091 249.8), rgb(37, 84, 129).
Aa
White text reads best on this color (7.88:1).
About this color
#255481 is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.091 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.019 away. White text reads best on it, at 7.88:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.66:1 |
| White text | 7.88:1 |
Values
| HEX | #255481 |
| RGB | rgb(37, 84, 129) |
| HSL | hsl(209, 55%, 33%) |
| OKLCH | oklch(43.6% 0.091 249.8) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #255481 | 7.88:1 | AAA | Lc -91.8 | Preferred for body text |
| Black text on #255481 | 2.66:1 | Fails | Lc 16.9 | Dividers and decoration only |
| #255481 text on white | 7.88:1 | AAA | Lc 87.1 | Fine for body text |
| #255481 text on black | 2.66:1 | Fails | Lc -15.0 | Dividers and decoration only |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 800.
-
Step 50
50
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF4
oklch(93.6% 0.016 248)
-
Step 200
200
#CBDBEC
oklch(88.5% 0.029 249.8)
-
Step 300
300
#A7C4E2
oklch(80.9% 0.053 249.4)
-
Step 400
400
#77A5D4
oklch(70.7% 0.085 249.6)
-
Step 500
500
#538EC8
oklch(63.1% 0.108 249.5)
-
Step 600
600
#3677B5
oklch(55.6% 0.117 249.8)
-
Step 700
700
#28649C
oklch(49.2% 0.109 249.7)
-
Step 800
800 (this color)
#255481
oklch(43.6% 0.091 249.8)
-
Step 900
900
#214465
oklch(37.7% 0.07 248.9)
-
Step 950
950
#14283B
oklch(27% 0.044 248.6)
#255481 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #405683 | 0.031 |
| Deuteranopia (no green cones) | #334E80 | 0.021 |
| Tritanopia (no blue cones) | #005F64 | 0.070 |
| Achromatopsia (no color) | #515151 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #255481
#255481
oklch(43.6% 0.091 249.8)
- #714708
#714708
oklch(43.6% 0.091 69.6)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #255481, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.019
- Light Navy #155084 ΔE 0.019
- Dusk Blue #26538D ΔE 0.021
- Light Navy Blue #2E5A88 ΔE 0.023
- YInMn Blue #415A77 ΔE 0.042
- Denim Blue #3B5B92 ΔE 0.042
- Cobalt #1E488F ΔE 0.047
- Dusk #4E5481 ΔE 0.049
Use #255481 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.