#255C91
Closest named color: Light Navy Blue (#2E5A88). oklch(46.5% 0.104 250.4), rgb(37, 92, 145).
Aa
White text reads best on this color (6.95:1).
About this color
#255C91 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.104 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.015 away. White text reads best on it, at 6.95:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.104) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 3.01:1 |
| White text | 6.95:1 |
Values
| HEX | #255C91 |
| RGB | rgb(37, 92, 145) |
| HSL | hsl(209, 59%, 36%) |
| OKLCH | oklch(46.5% 0.104 250.4) |
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 #255C91 | 6.95:1 | AA | Lc -88.8 | Fine for body text |
| Black text on #255C91 | 3.01:1 | AA large text | Lc 20.3 | Dividers and decoration only |
| #255C91 text on white | 6.95:1 | AA | Lc 83.8 | Fine for body text |
| #255C91 text on black | 3.01:1 | AA large text | Lc -18.2 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF3
oklch(93.6% 0.014 248)
-
Step 200
200
#CCDBEB
oklch(88.5% 0.027 249.9)
-
Step 300
300
#A9C4E1
oklch(81% 0.051 250.3)
-
Step 400
400
#7AA5D1
oklch(70.7% 0.08 249.6)
-
Step 500
500
#578DC5
oklch(63% 0.103 250.6)
-
Step 600
600
#3B77B2
oklch(55.7% 0.111 250.1)
-
Step 700
700 (this color)
#255C91
oklch(46.5% 0.104 250.4)
-
Step 800
800
#26517C
oklch(42.6% 0.086 250.6)
-
Step 900
900
#244464
oklch(37.8% 0.067 250)
-
Step 950
950
#16283A
oklch(27.1% 0.041 249.6)
#255C91 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) | #445F93 | 0.034 |
| Deuteranopia (no green cones) | #345590 | 0.022 |
| Tritanopia (no blue cones) | #00696F | 0.079 |
| Achromatopsia (no color) | #595959 | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #255C91
#255C91
oklch(46.5% 0.104 250.4)
- #7C4E00
#7C4E00
oklch(46.5% 0.1 70.8)
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 #255C91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.015
- Denim Blue #3B5B92 ΔE 0.021
- Dusk Blue #26538D ΔE 0.026
- Peacock Blue #016795 ΔE 0.032
- Denim #3B638C ΔE 0.033
- Dusky Blue #475F94 ΔE 0.038
- Deep Sea Blue #015482 ΔE 0.040
- Light Navy #155084 ΔE 0.043
Use #255C91 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.