#252B3E
Closest named color: Space Cadet (#2B2D42). oklch(29.2% 0.036 270.6), rgb(37, 43, 62).
Aa
White text reads best on this color (14.05:1).
About this color
#252B3E is a dark, muted blue. In OKLCH its lightness is 29%, its chroma 0.036 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Space Cadet (#2B2D42), ΔE 0.014 away. White text reads best on it, at 14.05:1.
| Hue family | Blues |
| Lightness | dark (29%) |
| Chroma | muted (0.036) |
| Temperature | cool |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.49:1 |
| White text | 14.05:1 |
Values
| HEX | #252B3E |
| RGB | rgb(37, 43, 62) |
| HSL | hsl(226, 25%, 19%) |
| OKLCH | oklch(29.2% 0.036 270.6) |
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 #252B3E | 14.05:1 | AAA | Lc -103.7 | Preferred for body text |
| Black text on #252B3E | 1.49:1 | Fails | Lc 0.0 | Not readable |
| #252B3E text on white | 14.05:1 | AAA | Lc 100.7 | Preferred for body text |
| #252B3E text on black | 1.49:1 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E7EAF2
oklch(93.7% 0.011 269.5)
-
Step 200
200
#D3D9E9
oklch(88.6% 0.023 269.4)
-
Step 300
300
#B6C0DD
oklch(80.9% 0.042 270.4)
-
Step 400
400
#909FCC
oklch(70.7% 0.068 270.3)
-
Step 500
500
#7587BF
oklch(63.2% 0.087 270.1)
-
Step 600
600
#5E70AB
oklch(55.6% 0.095 270.2)
-
Step 700
700
#4E5D93
oklch(49% 0.089 271.1)
-
Step 800
800
#404C77
oklch(42.6% 0.073 271.2)
-
Step 900
900
#364060
oklch(37.7% 0.057 270.3)
-
Step 950
950 (this color)
#252B3E
oklch(29.2% 0.036 270.6)
#252B3E 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) | #252D3F | 0.007 |
| Deuteranopia (no green cones) | #232B3E | 0.003 |
| Tritanopia (no blue cones) | #1E2F32 | 0.032 |
| Achromatopsia (no color) | #2C2C2C | 0.036 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #252B3E
#252B3E
oklch(29.2% 0.036 270.6)
- #332B16
#332B16
oklch(29.2% 0.036 89.3)
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 #252B3E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.014
- Oxford Blue #1B263B ΔE 0.025
- Gunmetal #293241 ΔE 0.025
- Dark #1B2431 ΔE 0.036
- Jet #212529 ΔE 0.041
- Prussian Blue #1D3557 ΔE 0.049
- Dark Blue Grey #1F3B4D ΔE 0.053
- Midnight Green #073B4C ΔE 0.056
Use #252B3E 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.