#255A79
Closest named color: Light Navy Blue (#2E5A88). oklch(44.6% 0.076 237.5), rgb(37, 90, 121).
Aa
White text reads best on this color (7.45:1).
About this color
#255A79 is a dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.076 and its hue 238°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.027 away. White text reads best on it, at 7.45:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 2.81:1 |
| White text | 7.45:1 |
Values
| HEX | #255A79 |
| RGB | rgb(37, 90, 121) |
| HSL | hsl(202, 53%, 31%) |
| OKLCH | oklch(44.6% 0.076 237.5) |
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 #255A79 | 7.45:1 | AAA | Lc -90.5 | Preferred for body text |
| Black text on #255A79 | 2.81:1 | Fails | Lc 18.3 | Dividers and decoration only |
| #255A79 text on white | 7.45:1 | AAA | Lc 85.7 | Fine for body text |
| #255A79 text on black | 2.81:1 | Fails | Lc -16.4 | 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 800.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF1
oklch(93.5% 0.013 236.6)
-
Step 200
200
#CBDCE8
oklch(88.5% 0.025 238.4)
-
Step 300
300
#A7C5DA
oklch(80.8% 0.044 238.6)
-
Step 400
400
#76A8C8
oklch(70.8% 0.071 237.2)
-
Step 500
500
#5091BA
oklch(63% 0.091 238.2)
-
Step 600
600
#317BA6
oklch(55.6% 0.098 237.9)
-
Step 700
700
#23688E
oklch(49.2% 0.091 237.2)
-
Step 800
800 (this color)
#255A79
oklch(44.6% 0.076 237.5)
-
Step 900
900
#20465D
oklch(37.7% 0.059 237.6)
-
Step 950
950
#132936
oklch(26.9% 0.037 236.3)
#255A79 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) | #4B5A7A | 0.043 |
| Deuteranopia (no green cones) | #405178 | 0.037 |
| Tritanopia (no blue cones) | #006265 | 0.051 |
| Achromatopsia (no color) | #555555 | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #255A79
#255A79
oklch(44.6% 0.076 237.5)
- #744927
#744927
oklch(44.7% 0.076 57.5)
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 #255A79, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.027
- YInMn Blue #415A77 ΔE 0.029
- Deep Sea Blue #015482 ΔE 0.033
- Petrol #005F6A ΔE 0.038
- Light Navy #155084 ΔE 0.042
- Dusk Blue #26538D ΔE 0.044
- Denim #3B638C ΔE 0.046
- Denim Blue #3B5B92 ΔE 0.049
Use #255A79 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.