#252751
Closest named color: Space Cadet (#2B2D42). oklch(29.5% 0.075 278.7), rgb(37, 39, 81).
Aa
White text reads best on this color (14.11:1).
About this color
#252751 is a dark, moderately saturated blue. In OKLCH its lightness is 29%, its chroma 0.075 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Space Cadet (#2B2D42), ΔE 0.039 away. White text reads best on it, at 14.11:1.
| Hue family | Blues |
| Lightness | dark (29%) |
| Chroma | moderately saturated (0.075) |
| Temperature | cool |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.48:1 |
| White text | 14.11:1 |
Values
| HEX | #252751 |
| RGB | rgb(37, 39, 81) |
| HSL | hsl(237, 37%, 23%) |
| OKLCH | oklch(29.5% 0.075 278.7) |
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 #252751 | 14.11:1 | AAA | Lc -103.7 | Preferred for body text |
| Black text on #252751 | 1.48:1 | Fails | Lc 0.0 | Not readable |
| #252751 text on white | 14.11:1 | AAA | Lc 100.7 | Preferred for body text |
| #252751 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E6E9FB
oklch(93.7% 0.024 278.4)
-
Step 200
200
#D1D7FA
oklch(88.6% 0.049 277.7)
-
Step 300
300
#B3BBFA
oklch(80.8% 0.089 278.6)
-
Step 400
400
#8E96F7
oklch(70.8% 0.141 278.6)
-
Step 500
500
#7478F4
oklch(63.1% 0.182 278.4)
-
Step 600
600
#5F5DE3
oklch(55.7% 0.198 278.5)
-
Step 700
700
#4F4BC5
oklch(49.1% 0.184 278.6)
-
Step 800
800
#413F9F
oklch(42.8% 0.151 278.8)
-
Step 900
900
#36377E
oklch(37.8% 0.117 278.6)
-
Step 950
950 (this color)
#252751
oklch(29.5% 0.075 278.7)
#252751 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) | #152D53 | 0.026 |
| Deuteranopia (no green cones) | #112A50 | 0.027 |
| Tritanopia (no blue cones) | #143038 | 0.065 |
| Achromatopsia (no color) | #2B2B2B | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #252751
#252751
oklch(29.5% 0.075 278.7)
- #342D00
#342D00
oklch(29.6% 0.061 100.1)
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 #252751, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.039
- Prussian Blue #1D3557 ΔE 0.043
- Marine #042E60 ΔE 0.043
- Oxford Blue #1B263B ΔE 0.044
- Gunmetal #293241 ΔE 0.052
- Dark #1B2431 ΔE 0.062
- Marine Blue #01386A ΔE 0.065
- Dark Blue Grey #1F3B4D ΔE 0.066
Use #252751 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.