#02549B
Closest named color: Dusk Blue (#26538D). oklch(44.5% 0.134 252.6), rgb(2, 84, 155).
Aa
White text reads best on this color (7.65:1).
About this color
#02549B is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.134 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.028 away. White text reads best on it, at 7.65:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.134) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.74:1 |
| White text | 7.65:1 |
Values
| HEX | #02549B |
| RGB | rgb(2, 84, 155) |
| HSL | hsl(208, 97%, 31%) |
| OKLCH | oklch(44.5% 0.134 252.6) |
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 #02549B | 7.65:1 | AAA | Lc -90.8 | Preferred for body text |
| Black text on #02549B | 2.74:1 | Fails | Lc 18.1 | Dividers and decoration only |
| #02549B text on white | 7.65:1 | AAA | Lc 85.9 | Fine for body text |
| #02549B text on black | 2.74:1 | Fails | Lc -16.1 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#DFEBF9
oklch(93.5% 0.023 252.2)
-
Step 200
200
#C5DCF6
oklch(88.6% 0.044 251.5)
-
Step 300
300
#9DC4F3
oklch(80.9% 0.079 253.4)
-
Step 400
400
#64A4ED
oklch(70.7% 0.126 252.8)
-
Step 500
500
#338BE7
oklch(63% 0.161 252.8)
-
Step 600
600
#0073D2
oklch(55.5% 0.17 252.7)
-
Step 700
700
#0061B2
oklch(49.2% 0.149 252.5)
-
Step 800
800 (this color)
#02549B
oklch(44.5% 0.134 252.6)
-
Step 900
900
#0C4277
oklch(37.7% 0.105 252.7)
-
Step 950
950
#0A2746
oklch(27% 0.067 252.9)
#02549B 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) | #2D5A9E | 0.033 |
| Deuteranopia (no green cones) | #064E9A | 0.017 |
| Tritanopia (no blue cones) | #006570 | 0.098 |
| Achromatopsia (no color) | #535353 | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #02549B
#02549B
oklch(44.5% 0.134 252.6)
- #734A00
#734A00
oklch(44.5% 0.095 73)
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 #02549B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.028
- Cobalt #1E488F ΔE 0.036
- Light Navy #155084 ΔE 0.038
- Deep Sea Blue #015482 ΔE 0.042
- Light Navy Blue #2E5A88 ΔE 0.046
- Denim Blue #3B5B92 ΔE 0.049
- Peacock Blue #016795 ΔE 0.059
- Dusky Blue #475F94 ΔE 0.068
Use #02549B 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.