#255F87
Closest named color: Light Navy Blue (#2E5A88). oklch(46.7% 0.088 242.3), rgb(37, 95, 135).
Aa
White text reads best on this color (6.85:1).
About this color
#255F87 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.088 and its hue 242°. 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 6.85:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.088) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 3.06:1 |
| White text | 6.85:1 |
Values
| HEX | #255F87 |
| RGB | rgb(37, 95, 135) |
| HSL | hsl(204, 57%, 34%) |
| OKLCH | oklch(46.7% 0.088 242.3) |
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 #255F87 | 6.85:1 | AA | Lc -88.4 | Fine for body text |
| Black text on #255F87 | 3.06:1 | AA large text | Lc 20.6 | Dividers and decoration only |
| #255F87 text on white | 6.85:1 | AA | Lc 83.4 | Fine for body text |
| #255F87 text on black | 3.06:1 | AA large text | Lc -18.5 | 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
#A9C5DA
oklch(80.9% 0.042 240.5)
-
Step 400
400
#7BA6C8
oklch(70.7% 0.068 242.7)
-
Step 500
500
#5790BA
oklch(63.1% 0.087 241.9)
-
Step 600
600
#3B79A6
oklch(55.5% 0.095 242.6)
-
Step 700
700 (this color)
#255F87
oklch(46.7% 0.088 242.3)
-
Step 800
800
#265374
oklch(42.6% 0.074 243)
-
Step 900
900
#24455D
oklch(37.7% 0.057 241.9)
-
Step 950
950
#162937
oklch(27.2% 0.036 241.7)
#255F87 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) | #4D6089 | 0.043 |
| Deuteranopia (no green cones) | #3F5686 | 0.034 |
| Tritanopia (no blue cones) | #00696D | 0.063 |
| Achromatopsia (no color) | #5A5A5A | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #255F87
#255F87
oklch(46.7% 0.088 242.3)
- #7D4D1E
#7D4D1E
oklch(46.6% 0.089 61.6)
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 #255F87, 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 0.030
- Denim Blue #3B5B92 ΔE 0.032
- YInMn Blue #415A77 ΔE 0.035
- Dusk Blue #26538D ΔE 0.039
- Deep Sea Blue #015482 ΔE 0.041
- Dusky Blue #475F94 ΔE 0.042
Use #255F87 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.