#255E8B
Closest named color: Light Navy Blue (#2E5A88). oklch(46.6% 0.094 245.7), rgb(37, 94, 139).
Aa
White text reads best on this color (6.87:1).
About this color
#255E8B is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.094 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.013 away. White text reads best on it, at 6.87:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.094) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 3.05:1 |
| White text | 6.87:1 |
Values
| HEX | #255E8B |
| RGB | rgb(37, 94, 139) |
| HSL | hsl(206, 58%, 35%) |
| OKLCH | oklch(46.6% 0.094 245.7) |
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 #255E8B | 6.87:1 | AA | Lc -88.5 | Fine for body text |
| Black text on #255E8B | 3.05:1 | AA large text | Lc 20.5 | Dividers and decoration only |
| #255E8B text on white | 6.87:1 | AA | Lc 83.5 | Fine for body text |
| #255E8B text on black | 3.05:1 | AA large text | Lc -18.4 | 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
#A9C4DD
oklch(80.8% 0.046 246.3)
-
Step 400
400
#7BA6CC
oklch(70.8% 0.073 245.7)
-
Step 500
500
#578FBE
oklch(63.1% 0.093 245.3)
-
Step 600
600
#3B78AB
oklch(55.5% 0.102 246.3)
-
Step 700
700 (this color)
#255E8B
oklch(46.6% 0.094 245.7)
-
Step 800
800
#265377
oklch(42.8% 0.078 245.2)
-
Step 900
900
#244560
oklch(37.8% 0.061 245.1)
-
Step 950
950
#162838
oklch(26.9% 0.038 246.6)
#255E8B 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) | #4A608D | 0.040 |
| Deuteranopia (no green cones) | #3B568A | 0.029 |
| Tritanopia (no blue cones) | #00696E | 0.069 |
| Achromatopsia (no color) | #5A5A5A | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #255E8B
#255E8B
oklch(46.6% 0.094 245.7)
- #7D4D14
#7D4D14
oklch(46.5% 0.094 65.2)
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 #255E8B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.013
- Denim Blue #3B5B92 ΔE 0.026
- Denim #3B638C ΔE 0.027
- Peacock Blue #016795 ΔE 0.029
- Dusk Blue #26538D ΔE 0.034
- Dusky Blue #475F94 ΔE 0.039
- YInMn Blue #415A77 ΔE 0.039
- Deep Sea Blue #015482 ΔE 0.040
Use #255E8B 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.