#252757
Closest named color: Marine (#042E60). oklch(29.9% 0.085 278.2), rgb(37, 39, 87).
Aa
White text reads best on this color (13.93:1).
About this color
#252757 is a dark, moderately saturated blue. In OKLCH its lightness is 30%, its chroma 0.085 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.039 away. White text reads best on it, at 13.93:1.
| Hue family | Blues |
| Lightness | dark (30%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.50:1 |
| White text | 13.93:1 |
Values
| HEX | #252757 |
| RGB | rgb(37, 39, 87) |
| HSL | hsl(238, 40%, 24%) |
| OKLCH | oklch(29.9% 0.085 278.2) |
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 #252757 | 13.93:1 | AAA | Lc -103.5 | Preferred for body text |
| Black text on #252757 | 1.50:1 | Fails | Lc 0.0 | Not readable |
| #252757 text on white | 13.93:1 | AAA | Lc 100.4 | Preferred for body text |
| #252757 text on black | 1.50:1 | 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
#F3F5FF
oklch(97.2% 0.013 277.1)
-
Step 100
100
#E5E8FE
oklch(93.5% 0.03 279.6)
-
Step 200
200
#D0D6FF
oklch(88.5% 0.057 278.6)
-
Step 300
300
#B2BBFF
oklch(81% 0.097 278.2)
-
Step 400
400
#8C94FF
oklch(70.7% 0.155 278.4)
-
Step 500
500
#7275FF
oklch(63.2% 0.2 278.1)
-
Step 600
600
#5D57F1
oklch(55.6% 0.223 278)
-
Step 700
700
#4E45D2
oklch(49.1% 0.208 278.3)
-
Step 800
800
#3F3AAA
oklch(42.7% 0.173 278.1)
-
Step 900
900
#353486
oklch(37.7% 0.134 278.4)
-
Step 950
950 (this color)
#252757
oklch(29.9% 0.085 278.2)
#252757 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) | #0F2E59 | 0.031 |
| Deuteranopia (no green cones) | #082A56 | 0.034 |
| Tritanopia (no blue cones) | #0F323B | 0.074 |
| Achromatopsia (no color) | #2C2C2C | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #252757
#252757
oklch(29.9% 0.085 278.2)
- #362E00
#362E00
oklch(30.1% 0.062 98.8)
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 #252757, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.039
- Prussian Blue #1D3557 ΔE 0.043
- Space Cadet #2B2D42 ΔE 0.047
- Oxford Blue #1B263B ΔE 0.055
- Gunmetal #293241 ΔE 0.059
- Marine Blue #01386A ΔE 0.060
- Midnight Blue #191970 ΔE 0.061
- Dark Blue Grey #1F3B4D ΔE 0.070
Use #252757 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.