#252E6E
Closest named color: Marine Blue (#01386A). oklch(33.3% 0.111 272.9), rgb(37, 46, 110).
Aa
White text reads best on this color (12.39:1).
About this color
#252E6E is a dark, moderately saturated blue. In OKLCH its lightness is 33%, its chroma 0.111 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.039 away. White text reads best on it, at 12.39:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.111) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.69:1 |
| White text | 12.39:1 |
Values
| HEX | #252E6E |
| RGB | rgb(37, 46, 110) |
| HSL | hsl(233, 50%, 29%) |
| OKLCH | oklch(33.3% 0.111 272.9) |
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 #252E6E | 12.39:1 | AAA | Lc -101.4 | Preferred for body text |
| Black text on #252E6E | 1.69:1 | Fails | Lc 0.0 | Not readable |
| #252E6E text on white | 12.39:1 | AAA | Lc 97.9 | Preferred for body text |
| #252E6E text on black | 1.69:1 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E4E9FA
oklch(93.5% 0.024 272.8)
-
Step 200
200
#CFD8F8
oklch(88.5% 0.045 273)
-
Step 300
300
#AEBEF7
oklch(80.9% 0.083 272.3)
-
Step 400
400
#859AF3
oklch(70.7% 0.132 272.5)
-
Step 500
500
#697EEE
oklch(63.1% 0.168 272.7)
-
Step 600
600
#5364DD
oklch(55.7% 0.184 272.9)
-
Step 700
700
#4452C0
oklch(49.2% 0.171 272.9)
-
Step 800
800
#37449B
oklch(42.7% 0.142 272.5)
-
Step 900
900 (this color)
#252E6E
oklch(33.3% 0.111 272.9)
-
Step 950
950
#1C2348
oklch(27.1% 0.069 272.9)
#252E6E 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) | #003870 | 0.037 |
| Deuteranopia (no green cones) | #00316D | 0.033 |
| Tritanopia (no blue cones) | #003D49 | 0.093 |
| Achromatopsia (no color) | #343434 | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #252E6E
#252E6E
oklch(33.3% 0.111 272.9)
- #423500
#423500
oklch(33.3% 0.068 93.7)
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 #252E6E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.039
- Marine #042E60 ΔE 0.042
- Prussian Blue #1D3557 ΔE 0.049
- Midnight Blue #191970 ΔE 0.056
- Twilight Blue #0A437A ΔE 0.061
- Dark Blue Grey #1F3B4D ΔE 0.077
- Space Cadet #2B2D42 ΔE 0.078
- Midnight Green #073B4C ΔE 0.083
Use #252E6E 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.