#255F88
Closest named color: Light Navy Blue (#2E5A88). oklch(46.7% 0.09 243), rgb(37, 95, 136).
Aa
White text reads best on this color (6.83:1).
About this color
#255F88 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.090 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.016 away. White text reads best on it, at 6.83:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 3.07:1 |
| White text | 6.83:1 |
Values
| HEX | #255F88 |
| RGB | rgb(37, 95, 136) |
| HSL | hsl(205, 57%, 34%) |
| OKLCH | oklch(46.7% 0.09 243) |
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 #255F88 | 6.83:1 | AA | Lc -88.4 | Fine for body text |
| Black text on #255F88 | 3.07:1 | AA large text | Lc 20.7 | Dividers and decoration only |
| #255F88 text on white | 6.83:1 | AA | Lc 83.3 | Fine for body text |
| #255F88 text on black | 3.07:1 | AA large text | Lc -18.6 | 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 700.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF2
oklch(93.6% 0.013 244.3)
-
Step 200
200
#CCDBE8
oklch(88.4% 0.024 244.2)
-
Step 300
300
#A9C5DB
oklch(81% 0.043 241.8)
-
Step 400
400
#7BA6C9
oklch(70.7% 0.069 243.5)
-
Step 500
500
#5790BB
oklch(63.2% 0.089 242.5)
-
Step 600
600
#3B79A7
oklch(55.6% 0.096 243.2)
-
Step 700
700 (this color)
#255F88
oklch(46.7% 0.09 243)
-
Step 800
800
#265374
oklch(42.6% 0.074 243)
-
Step 900
900
#24455E
oklch(37.7% 0.058 243)
-
Step 950
950
#162837
oklch(26.9% 0.037 244.9)
#255F88 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) | #4C608A | 0.042 |
| Deuteranopia (no green cones) | #3F5687 | 0.034 |
| Tritanopia (no blue cones) | #00696D | 0.064 |
| Achromatopsia (no color) | #5B5B5B | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #255F88
#255F88
oklch(46.7% 0.09 243)
- #7D4E1D
#7D4E1D
oklch(46.8% 0.089 63.2)
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 #255F88, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.016
- Denim #3B638C ΔE 0.026
- Peacock Blue #016795 ΔE 0.029
- Denim Blue #3B5B92 ΔE 0.030
- YInMn Blue #415A77 ΔE 0.036
- Dusk Blue #26538D ΔE 0.039
- Deep Sea Blue #015482 ΔE 0.041
- Dusky Blue #475F94 ΔE 0.041
Use #255F88 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.