#252B47
Closest named color: Space Cadet (#2B2D42). oklch(29.8% 0.052 273.7), rgb(37, 43, 71).
Aa
White text reads best on this color (13.85:1).
About this color
#252B47 is a dark, muted blue. In OKLCH its lightness is 30%, its chroma 0.052 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Space Cadet (#2B2D42), ΔE 0.016 away. White text reads best on it, at 13.85:1.
| Hue family | Blues |
| Lightness | dark (30%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.51:1 |
| White text | 13.85:1 |
Values
| HEX | #252B47 |
| RGB | rgb(37, 43, 71) |
| HSL | hsl(229, 31%, 21%) |
| OKLCH | oklch(29.8% 0.052 273.7) |
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 #252B47 | 13.85:1 | AAA | Lc -103.5 | Preferred for body text |
| Black text on #252B47 | 1.51:1 | Fails | Lc 0.0 | Not readable |
| #252B47 text on white | 13.85:1 | AAA | Lc 100.4 | Preferred for body text |
| #252B47 text on black | 1.51:1 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E6E9F6
oklch(93.6% 0.018 275.6)
-
Step 200
200
#D2D8F0
oklch(88.5% 0.034 274.5)
-
Step 300
300
#B4BFE9
oklch(81% 0.061 273.5)
-
Step 400
400
#8D9CDE
oklch(70.7% 0.098 273.8)
-
Step 500
500
#7282D5
oklch(63% 0.126 274)
-
Step 600
600
#5B6AC2
oklch(55.5% 0.137 273.8)
-
Step 700
700
#4B58A7
oklch(49% 0.126 273.8)
-
Step 800
800
#3E4988
oklch(42.9% 0.105 273.7)
-
Step 900
900
#343D6C
oklch(37.6% 0.081 273.7)
-
Step 950
950 (this color)
#252B47
oklch(29.8% 0.052 273.7)
#252B47 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) | #212E48 | 0.011 |
| Deuteranopia (no green cones) | #1E2B46 | 0.011 |
| Tritanopia (no blue cones) | #1A3135 | 0.047 |
| Achromatopsia (no color) | #2D2D2D | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #252B47
#252B47
oklch(29.8% 0.052 273.7)
- #362C0A
#362C0A
oklch(29.7% 0.051 92.4)
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 #252B47, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.016
- Gunmetal #293241 ΔE 0.030
- Oxford Blue #1B263B ΔE 0.031
- Prussian Blue #1D3557 ΔE 0.038
- Dark #1B2431 ΔE 0.047
- Dark Blue Grey #1F3B4D ΔE 0.051
- Marine #042E60 ΔE 0.053
- Midnight Green #073B4C ΔE 0.055
Use #252B47 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.