#255D88
Closest named color: Light Navy Blue (#2E5A88). oklch(46.2% 0.091 245), rgb(37, 93, 136).
Aa
White text reads best on this color (7.00:1).
About this color
#255D88 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.091 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.011 away. White text reads best on it, at 7.00:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 2.99:1 |
| White text | 7.00:1 |
Values
| HEX | #255D88 |
| RGB | rgb(37, 93, 136) |
| HSL | hsl(206, 57%, 34%) |
| OKLCH | oklch(46.2% 0.091 245) |
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 #255D88 | 7.00:1 | AAA | Lc -88.9 | Fine for body text |
| Black text on #255D88 | 2.99:1 | Fails | Lc 20.1 | Dividers and decoration only |
| #255D88 text on white | 7.00:1 | AAA | Lc 84.0 | Fine for body text |
| #255D88 text on black | 2.99:1 | Fails | Lc -18.0 | 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 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
#CCDBE9
oklch(88.4% 0.025 246.2)
-
Step 300
300
#AAC4DC
oklch(80.9% 0.044 246.2)
-
Step 400
400
#7BA6CA
oklch(70.7% 0.07 244.3)
-
Step 500
500
#588FBD
oklch(63.1% 0.091 245.2)
-
Step 600
600
#3C79A9
oklch(55.7% 0.098 244.7)
-
Step 700
700 (this color)
#255D88
oklch(46.2% 0.091 245)
-
Step 800
800
#275376
oklch(42.8% 0.076 245)
-
Step 900
900
#25455F
oklch(37.8% 0.059 244.8)
-
Step 950
950
#162838
oklch(26.9% 0.038 246.6)
#255D88 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) | #4A5E8A | 0.040 |
| Deuteranopia (no green cones) | #3C5587 | 0.030 |
| Tritanopia (no blue cones) | #00676C | 0.065 |
| Achromatopsia (no color) | #595959 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #255D88
#255D88
oklch(46.2% 0.091 245)
- #7B4D17
#7B4D17
oklch(46.3% 0.091 65.6)
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 #255D88, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.011
- Denim Blue #3B5B92 ΔE 0.029
- Denim #3B638C ΔE 0.030
- Peacock Blue #016795 ΔE 0.033
- Dusk Blue #26538D ΔE 0.033
- YInMn Blue #415A77 ΔE 0.036
- Deep Sea Blue #015482 ΔE 0.036
- Dusky Blue #475F94 ΔE 0.042
Use #255D88 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.