#252D40
Closest named color: Space Cadet (#2B2D42). oklch(29.9% 0.036 266.6), rgb(37, 45, 64).
Aa
White text reads best on this color (13.74:1).
About this color
#252D40 is a dark, muted blue. In OKLCH its lightness is 30%, its chroma 0.036 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Space Cadet (#2B2D42), ΔE 0.011 away. White text reads best on it, at 13.74:1.
| Hue family | Blues |
| Lightness | dark (30%) |
| Chroma | muted (0.036) |
| Temperature | cool |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.52:1 |
| White text | 13.74:1 |
Values
| HEX | #252D40 |
| RGB | rgb(37, 45, 64) |
| HSL | hsl(222, 27%, 20%) |
| OKLCH | oklch(29.9% 0.036 266.6) |
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 #252D40 | 13.74:1 | AAA | Lc -103.4 | Preferred for body text |
| Black text on #252D40 | 1.52:1 | Fails | Lc 0.0 | Not readable |
| #252D40 text on white | 13.74:1 | AAA | Lc 100.3 | Preferred for body text |
| #252D40 text on black | 1.52:1 | 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
#E6EAF3
oklch(93.7% 0.013 266.7)
-
Step 200
200
#D2D9EA
oklch(88.5% 0.025 267.9)
-
Step 300
300
#B4C1DD
oklch(81% 0.042 265.7)
-
Step 400
400
#8DA0CD
oklch(70.7% 0.07 266.8)
-
Step 500
500
#7188C0
oklch(63.1% 0.089 266.8)
-
Step 600
600
#5971AC
oklch(55.6% 0.097 266.5)
-
Step 700
700
#495F94
oklch(49.2% 0.089 266.1)
-
Step 800
800
#3C4D78
oklch(42.6% 0.075 266.8)
-
Step 900
900
#334160
oklch(37.7% 0.057 265.2)
-
Step 950
950 (this color)
#252D40
oklch(29.9% 0.036 266.6)
#252D40 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) | #272E41 | 0.005 |
| Deuteranopia (no green cones) | #242C40 | 0.004 |
| Tritanopia (no blue cones) | #1D3134 | 0.032 |
| Achromatopsia (no color) | #2D2D2D | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #252D40
#252D40
oklch(29.9% 0.036 266.6)
- #352C17
#352C17
oklch(29.7% 0.036 87)
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 #252D40, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.011
- Gunmetal #293241 ΔE 0.018
- Oxford Blue #1B263B ΔE 0.030
- Dark #1B2431 ΔE 0.042
- Prussian Blue #1D3557 ΔE 0.044
- Jet #212529 ΔE 0.046
- Dark Blue Grey #1F3B4D ΔE 0.046
- Midnight Green #073B4C ΔE 0.050
Use #252D40 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.