#252A3F
Closest named color: Space Cadet (#2B2D42). oklch(29% 0.039 273.5), rgb(37, 42, 63).
Aa
White text reads best on this color (14.17:1).
About this color
#252A3F is a dark, muted blue. In OKLCH its lightness is 29%, its chroma 0.039 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Space Cadet (#2B2D42), ΔE 0.015 away. White text reads best on it, at 14.17:1.
| Hue family | Blues |
| Lightness | dark (29%) |
| Chroma | muted (0.039) |
| Temperature | cool |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.48:1 |
| White text | 14.17:1 |
Values
| HEX | #252A3F |
| RGB | rgb(37, 42, 63) |
| HSL | hsl(228, 26%, 20%) |
| OKLCH | oklch(29% 0.039 273.5) |
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 #252A3F | 14.17:1 | AAA | Lc -103.8 | Preferred for body text |
| Black text on #252A3F | 1.48:1 | Fails | Lc 0.0 | Not readable |
| #252A3F text on white | 14.17:1 | AAA | Lc 100.9 | Preferred for body text |
| #252A3F text on black | 1.48:1 | 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
#E7E9F3
oklch(93.5% 0.014 277.1)
-
Step 200
200
#D3D8EB
oklch(88.4% 0.027 274.1)
-
Step 300
300
#B7BFDF
oklch(80.9% 0.046 274.3)
-
Step 400
400
#919ECF
oklch(70.7% 0.073 272.9)
-
Step 500
500
#7785C3
oklch(63.1% 0.095 273.7)
-
Step 600
600
#606EAF
oklch(55.6% 0.102 273.4)
-
Step 700
700
#4F5C97
oklch(49.1% 0.096 273)
-
Step 800
800
#414B7A
oklch(42.6% 0.079 273.5)
-
Step 900
900
#373F62
oklch(37.7% 0.061 273.3)
-
Step 950
950 (this color)
#252A3F
oklch(29% 0.039 273.5)
#252A3F 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) | #232C40 | 0.007 |
| Deuteranopia (no green cones) | #212A3E | 0.007 |
| Tritanopia (no blue cones) | #1D2E31 | 0.036 |
| Achromatopsia (no color) | #2B2B2B | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #252A3F
#252A3F
oklch(29% 0.039 273.5)
- #322B13
#322B13
oklch(29% 0.04 93.5)
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 #252A3F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.015
- Oxford Blue #1B263B ΔE 0.023
- Gunmetal #293241 ΔE 0.028
- Dark #1B2431 ΔE 0.035
- Jet #212529 ΔE 0.042
- Prussian Blue #1D3557 ΔE 0.049
- Dark Blue Grey #1F3B4D ΔE 0.055
- Midnight Green #073B4C ΔE 0.058
Use #252A3F 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.