#252A59
Closest named color: Marine (#042E60). oklch(30.8% 0.084 275.8), rgb(37, 42, 89).
Aa
White text reads best on this color (13.51:1).
About this color
#252A59 is a dark, moderately saturated blue. In OKLCH its lightness is 31%, its chroma 0.084 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.035 away. White text reads best on it, at 13.51:1.
| Hue family | Blues |
| Lightness | dark (31%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.55:1 |
| White text | 13.51:1 |
Values
| HEX | #252A59 |
| RGB | rgb(37, 42, 89) |
| HSL | hsl(234, 41%, 25%) |
| OKLCH | oklch(30.8% 0.084 275.8) |
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 #252A59 | 13.51:1 | AAA | Lc -103.0 | Preferred for body text |
| Black text on #252A59 | 1.55:1 | Fails | Lc 0.0 | Not readable |
| #252A59 text on white | 13.51:1 | AAA | Lc 99.8 | Preferred for body text |
| #252A59 text on black | 1.55:1 | Fails | Lc 0.0 | 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 950.
-
Step 50
50
#F3F5FF
oklch(97.2% 0.013 277.1)
-
Step 100
100
#E4E9FE
oklch(93.7% 0.029 275.2)
-
Step 200
200
#CFD7FE
oklch(88.6% 0.054 276.1)
-
Step 300
300
#AFBCFF
oklch(80.9% 0.096 275.6)
-
Step 400
400
#8796FF
oklch(70.7% 0.154 275.6)
-
Step 500
500
#6C77FF
oklch(63.2% 0.199 275.6)
-
Step 600
600
#575AF0
oklch(55.6% 0.22 275.7)
-
Step 700
700
#4848D1
oklch(49.1% 0.205 275.8)
-
Step 800
800
#3B3CA9
oklch(42.7% 0.17 276)
-
Step 900
900
#313586
oklch(37.6% 0.133 275.8)
-
Step 950
950 (this color)
#252A59
oklch(30.8% 0.084 275.8)
#252A59 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) | #13315B | 0.028 |
| Deuteranopia (no green cones) | #0D2C58 | 0.029 |
| Tritanopia (no blue cones) | #0C343D | 0.073 |
| Achromatopsia (no color) | #2E2E2E | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #252A59
#252A59
oklch(30.8% 0.084 275.8)
- #392F00
#392F00
oklch(30.7% 0.063 96.2)
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 #252A59, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.035
- Prussian Blue #1D3557 ΔE 0.035
- Space Cadet #2B2D42 ΔE 0.046
- Marine Blue #01386A ΔE 0.052
- Gunmetal #293241 ΔE 0.056
- Oxford Blue #1B263B ΔE 0.058
- Dark Blue Grey #1F3B4D ΔE 0.063
- Midnight Blue #191970 ΔE 0.063
Use #252A59 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.