#255A7E
Closest named color: Light Navy Blue (#2E5A88). oklch(44.9% 0.081 241.6), rgb(37, 90, 126).
Aa
White text reads best on this color (7.38:1).
About this color
#255A7E is a dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.081 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.019 away. White text reads best on it, at 7.38:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 2.84:1 |
| White text | 7.38:1 |
Values
| HEX | #255A7E |
| RGB | rgb(37, 90, 126) |
| HSL | hsl(204, 55%, 32%) |
| OKLCH | oklch(44.9% 0.081 241.6) |
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 #255A7E | 7.38:1 | AAA | Lc -90.3 | Preferred for body text |
| Black text on #255A7E | 2.84:1 | Fails | Lc 18.6 | Dividers and decoration only |
| #255A7E text on white | 7.38:1 | AAA | Lc 85.4 | Fine for body text |
| #255A7E text on black | 2.84:1 | Fails | Lc -16.6 | 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 800.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF2
oklch(93.5% 0.014 241)
-
Step 200
200
#CBDCE9
oklch(88.6% 0.026 240.7)
-
Step 300
300
#A6C5DD
oklch(80.9% 0.048 241.5)
-
Step 400
400
#75A7CC
oklch(70.7% 0.076 241.2)
-
Step 500
500
#4F90BF
oklch(63% 0.098 241.9)
-
Step 600
600
#307AAB
oklch(55.6% 0.105 241.4)
-
Step 700
700
#216793
oklch(49.2% 0.098 240.9)
-
Step 800
800 (this color)
#255A7E
oklch(44.9% 0.081 241.6)
-
Step 900
900
#1F4560
oklch(37.6% 0.063 242.1)
-
Step 950
950
#132938
oklch(27% 0.04 240.2)
#255A7E 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) | #4A5A80 | 0.041 |
| Deuteranopia (no green cones) | #3D527D | 0.032 |
| Tritanopia (no blue cones) | #006366 | 0.059 |
| Achromatopsia (no color) | #565656 | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #255A7E
#255A7E
oklch(44.9% 0.081 241.6)
- #754A20
#754A20
oklch(45% 0.081 62.3)
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 #255A7E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.019
- Deep Sea Blue #015482 ΔE 0.030
- YInMn Blue #415A77 ΔE 0.030
- Dusk Blue #26538D ΔE 0.036
- Light Navy #155084 ΔE 0.038
- Denim Blue #3B5B92 ΔE 0.041
- Denim #3B638C ΔE 0.042
- Petrol #005F6A ΔE 0.045
Use #255A7E 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.