#252E66
Closest named color: Marine (#042E60). oklch(32.7% 0.098 272.9), rgb(37, 46, 102).
Aa
White text reads best on this color (12.64:1).
About this color
#252E66 is a dark, moderately saturated blue. In OKLCH its lightness is 33%, its chroma 0.098 and its hue 273°. 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 12.64:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.66:1 |
| White text | 12.64:1 |
Values
| HEX | #252E66 |
| RGB | rgb(37, 46, 102) |
| HSL | hsl(232, 47%, 27%) |
| OKLCH | oklch(32.7% 0.098 272.9) |
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 #252E66 | 12.64:1 | AAA | Lc -101.8 | Preferred for body text |
| Black text on #252E66 | 1.66:1 | Fails | Lc 0.0 | Not readable |
| #252E66 text on white | 12.64:1 | AAA | Lc 98.4 | Preferred for body text |
| #252E66 text on black | 1.66:1 | 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 900.
-
Step 50
50
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E5E9F9
oklch(93.6% 0.022 274.7)
-
Step 200
200
#D0D8F5
oklch(88.5% 0.041 273.3)
-
Step 300
300
#B0BEF1
oklch(80.8% 0.074 272.7)
-
Step 400
400
#889BEA
oklch(70.7% 0.118 272.8)
-
Step 500
500
#6C80E4
oklch(63.1% 0.151 272.8)
-
Step 600
600
#5667D2
oklch(55.6% 0.164 273.1)
-
Step 700
700
#4655B5
oklch(49% 0.152 272.8)
-
Step 800
800
#3A4693
oklch(42.7% 0.126 273.2)
-
Step 900
900 (this color)
#252E66
oklch(32.7% 0.098 272.9)
-
Step 950
950
#1D2345
oklch(27% 0.063 273.9)
#252E66 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) | #0E3668 | 0.030 |
| Deuteranopia (no green cones) | #003065 | 0.034 |
| Tritanopia (no blue cones) | #003B45 | 0.085 |
| Achromatopsia (no color) | #333333 | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #252E66
#252E66
oklch(32.7% 0.098 272.9)
- #403300
#403300
oklch(32.6% 0.067 93.2)
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 #252E66, 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 0.038
- Marine Blue #01386A ΔE 0.038
- Midnight Blue #191970 ΔE 0.060
- Space Cadet #2B2D42 ΔE 0.065
- Twilight Blue #0A437A ΔE 0.066
- Dark Blue Grey #1F3B4D ΔE 0.066
- Gunmetal #293241 ΔE 0.070
Use #252E66 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.