#255B82
Closest named color: Light Navy Blue (#2E5A88). oklch(45.4% 0.085 243.3), rgb(37, 91, 130).
Aa
White text reads best on this color (7.24:1).
About this color
#255B82 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.085 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.014 away. White text reads best on it, at 7.24:1.
| Hue family | Blues |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 2.89:1 |
| White text | 7.24:1 |
Values
| HEX | #255B82 |
| RGB | rgb(37, 91, 130) |
| HSL | hsl(205, 56%, 33%) |
| OKLCH | oklch(45.4% 0.085 243.3) |
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 #255B82 | 7.24:1 | AAA | Lc -89.8 | Fine for body text |
| Black text on #255B82 | 2.89:1 | Fails | Lc 19.1 | Dividers and decoration only |
| #255B82 text on white | 7.24:1 | AAA | Lc 84.9 | Fine for body text |
| #255B82 text on black | 2.89:1 | Fails | Lc -17.1 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF3
oklch(93.6% 0.015 244.7)
-
Step 200
200
#CADCEA
oklch(88.5% 0.027 241.2)
-
Step 300
300
#A6C5DF
oklch(80.9% 0.05 243.7)
-
Step 400
400
#74A7CF
oklch(70.8% 0.08 242.8)
-
Step 500
500
#4E90C2
oklch(63.1% 0.101 243.3)
-
Step 600
600
#2D79AF
oklch(55.5% 0.112 243.6)
-
Step 700
700
#1F6696
oklch(49.1% 0.103 243.1)
-
Step 800
800 (this color)
#255B82
oklch(45.4% 0.085 243.3)
-
Step 900
900
#1E4562
oklch(37.6% 0.067 243.4)
-
Step 950
950
#132939
oklch(27.1% 0.041 242)
#255B82 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) | #495C84 | 0.040 |
| Deuteranopia (no green cones) | #3D5381 | 0.031 |
| Tritanopia (no blue cones) | #006569 | 0.062 |
| Achromatopsia (no color) | #575757 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #255B82
#255B82
oklch(45.4% 0.085 243.3)
- #774B1C
#774B1C
oklch(45.4% 0.085 64.1)
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 #255B82, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.014
- Deep Sea Blue #015482 ΔE 0.031
- YInMn Blue #415A77 ΔE 0.032
- Dusk Blue #26538D ΔE 0.033
- Denim Blue #3B5B92 ΔE 0.036
- Denim #3B638C ΔE 0.037
- Light Navy #155084 ΔE 0.038
- Peacock Blue #016795 ΔE 0.041
Use #255B82 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.