#255279
Closest named color: Deep Sea Blue (#015482). oklch(42.6% 0.082 247.3), rgb(37, 82, 121).
Aa
White text reads best on this color (8.19:1).
About this color
#255279 is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.082 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.022 away. White text reads best on it, at 8.19:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.56:1 |
| White text | 8.19:1 |
Values
| HEX | #255279 |
| RGB | rgb(37, 82, 121) |
| HSL | hsl(208, 53%, 31%) |
| OKLCH | oklch(42.6% 0.082 247.3) |
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 #255279 | 8.19:1 | AAA | Lc -92.8 | Preferred for body text |
| Black text on #255279 | 2.56:1 | Fails | Lc 15.9 | Dividers and decoration only |
| #255279 text on white | 8.19:1 | AAA | Lc 88.1 | Fine for body text |
| #255279 text on black | 2.56:1 | Fails | Lc -14.0 | Not readable |
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
#E3EBF3
oklch(93.6% 0.014 248)
-
Step 200
200
#CCDBEA
oklch(88.5% 0.026 248.1)
-
Step 300
300
#A9C4DE
oklch(80.9% 0.047 247.4)
-
Step 400
400
#7AA5CE
oklch(70.6% 0.076 247.8)
-
Step 500
500
#568FC2
oklch(63.2% 0.098 247)
-
Step 600
600
#3A78AE
oklch(55.6% 0.106 247.4)
-
Step 700
700
#2B6596
oklch(49.2% 0.099 247.1)
-
Step 800
800 (this color)
#255279
oklch(42.6% 0.082 247.3)
-
Step 900
900
#234462
oklch(37.6% 0.065 247.8)
-
Step 950
950
#152839
oklch(26.9% 0.04 246.9)
#255279 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) | #41537B | 0.033 |
| Deuteranopia (no green cones) | #354B78 | 0.025 |
| Tritanopia (no blue cones) | #005B60 | 0.061 |
| Achromatopsia (no color) | #4F4F4F | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #255279
#255279
oklch(42.6% 0.082 247.3)
- #6C4515
#6C4515
oklch(42.6% 0.081 67.4)
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 #255279, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.022
- Light Navy #155084 ΔE 0.023
- Dusk Blue #26538D ΔE 0.033
- Light Navy Blue #2E5A88 ΔE 0.034
- YInMn Blue #415A77 ΔE 0.043
- Cobalt #1E488F ΔE 0.052
- Twilight Blue #0A437A ΔE 0.053
- Dusk #4E5481 ΔE 0.054
Use #255279 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.