#252B41
Closest named color: Space Cadet (#2B2D42). oklch(29.4% 0.041 272), rgb(37, 43, 65).
Aa
White text reads best on this color (13.99:1).
About this color
#252B41 is a dark, muted blue. In OKLCH its lightness is 29%, its chroma 0.041 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Space Cadet (#2B2D42), ΔE 0.013 away. White text reads best on it, at 13.99:1.
| Hue family | Blues |
| Lightness | dark (29%) |
| Chroma | muted (0.041) |
| Temperature | cool |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.50:1 |
| White text | 13.99:1 |
Values
| HEX | #252B41 |
| RGB | rgb(37, 43, 65) |
| HSL | hsl(227, 27%, 20%) |
| OKLCH | oklch(29.4% 0.041 272) |
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 #252B41 | 13.99:1 | AAA | Lc -103.6 | Preferred for body text |
| Black text on #252B41 | 1.50:1 | Fails | Lc 0.0 | Not readable |
| #252B41 text on white | 13.99:1 | AAA | Lc 100.6 | Preferred for body text |
| #252B41 text on black | 1.50:1 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E6E9F4
oklch(93.5% 0.015 273.8)
-
Step 200
200
#D3D9EC
oklch(88.6% 0.027 271.8)
-
Step 300
300
#B5BFE1
oklch(80.8% 0.049 272.4)
-
Step 400
400
#8F9ED2
oklch(70.7% 0.078 271.8)
-
Step 500
500
#7485C6
oklch(63% 0.1 272.1)
-
Step 600
600
#5D6EB3
oklch(55.6% 0.109 272)
-
Step 700
700
#4D5C9A
oklch(49.2% 0.101 272)
-
Step 800
800
#3F4B7D
oklch(42.7% 0.084 272.2)
-
Step 900
900
#353F64
oklch(37.6% 0.065 271.5)
-
Step 950
950 (this color)
#252B41
oklch(29.4% 0.041 272)
#252B41 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) | #242D42 | 0.006 |
| Deuteranopia (no green cones) | #212B40 | 0.007 |
| Tritanopia (no blue cones) | #1C2F33 | 0.036 |
| Achromatopsia (no color) | #2C2C2C | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #252B41
#252B41
oklch(29.4% 0.041 272)
- #342C13
#342C13
oklch(29.5% 0.041 92)
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 #252B41, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.013
- Gunmetal #293241 ΔE 0.025
- Oxford Blue #1B263B ΔE 0.026
- Dark #1B2431 ΔE 0.039
- Prussian Blue #1D3557 ΔE 0.045
- Jet #212529 ΔE 0.046
- Dark Blue Grey #1F3B4D ΔE 0.052
- Midnight Green #073B4C ΔE 0.055
Use #252B41 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.