#255683
Closest named color: Light Navy Blue (#2E5A88). oklch(44.2% 0.091 248.9), rgb(37, 86, 131).
Aa
White text reads best on this color (7.67:1).
About this color
#255683 is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.091 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.017 away. White text reads best on it, at 7.67:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 2.73:1 |
| White text | 7.67:1 |
Values
| HEX | #255683 |
| RGB | rgb(37, 86, 131) |
| HSL | hsl(209, 56%, 33%) |
| OKLCH | oklch(44.2% 0.091 248.9) |
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 #255683 | 7.67:1 | AAA | Lc -91.2 | Preferred for body text |
| Black text on #255683 | 2.73:1 | Fails | Lc 17.6 | Dividers and decoration only |
| #255683 text on white | 7.67:1 | AAA | Lc 86.4 | Fine for body text |
| #255683 text on black | 2.73:1 | Fails | Lc -15.7 | 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
#76A5D4
oklch(70.6% 0.086 249.1)
-
Step 500
500
#518EC8
oklch(63.1% 0.109 248.8)
-
Step 600
600
#3377B5
oklch(55.5% 0.118 249)
-
Step 700
700
#25649C
oklch(49.1% 0.11 248.9)
-
Step 800
800 (this color)
#255683
oklch(44.2% 0.091 248.9)
-
Step 900
900
#204466
oklch(37.7% 0.072 249.1)
-
Step 950
950
#14283B
oklch(27% 0.044 248.6)
#255683 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) | #425885 | 0.033 |
| Deuteranopia (no green cones) | #354F82 | 0.024 |
| Tritanopia (no blue cones) | #006166 | 0.070 |
| Achromatopsia (no color) | #535353 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #255683
#255683
oklch(44.2% 0.091 248.9)
- #73480B
#73480B
oklch(44.1% 0.091 68.7)
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 #255683, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.017
- Dusk Blue #26538D ΔE 0.021
- Deep Sea Blue #015482 ΔE 0.021
- Light Navy #155084 ΔE 0.024
- Denim Blue #3B5B92 ΔE 0.037
- YInMn Blue #415A77 ΔE 0.039
- Dusk #4E5481 ΔE 0.048
- Denim #3B638C ΔE 0.048
Use #255683 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.