#252B72
Closest named color: Marine Blue (#01386A). oklch(33.1% 0.121 274.1), rgb(37, 43, 114).
Aa
White text reads best on this color (12.59:1).
About this color
#252B72 is a dark, moderately saturated blue. In OKLCH its lightness is 33%, its chroma 0.121 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.047 away. White text reads best on it, at 12.59:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.121) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.66:1 |
| White text | 12.59:1 |
Values
| HEX | #252B72 |
| RGB | rgb(37, 43, 114) |
| HSL | hsl(235, 51%, 30%) |
| OKLCH | oklch(33.1% 0.121 274.1) |
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 #252B72 | 12.59:1 | AAA | Lc -101.6 | Preferred for body text |
| Black text on #252B72 | 1.66:1 | Fails | Lc 0.0 | Not readable |
| #252B72 text on white | 12.59:1 | AAA | Lc 98.2 | Preferred for body text |
| #252B72 text on black | 1.66:1 | 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 900.
-
Step 50
50
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E4E9FC
oklch(93.6% 0.026 274.1)
-
Step 200
200
#CED7FB
oklch(88.4% 0.051 274.3)
-
Step 300
300
#AEBDFC
oklch(81% 0.091 273.9)
-
Step 400
400
#8598FA
oklch(70.7% 0.145 273.8)
-
Step 500
500
#6A7AF7
oklch(63% 0.185 274.3)
-
Step 600
600
#5460E6
oklch(55.7% 0.201 274)
-
Step 700
700
#454EC8
oklch(49.1% 0.187 274)
-
Step 800
800
#3841A2
oklch(42.8% 0.155 273.8)
-
Step 900
900 (this color)
#252B72
oklch(33.1% 0.121 274.1)
-
Step 950
950
#1C224B
oklch(27.1% 0.076 274)
#252B72 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) | #003774 | 0.040 |
| Deuteranopia (no green cones) | #003071 | 0.034 |
| Tritanopia (no blue cones) | #003C4A | 0.099 |
| Achromatopsia (no color) | #333333 | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #252B72
#252B72
oklch(33.1% 0.121 274.1)
- #413400
#413400
oklch(33% 0.068 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 #252B72, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.047
- Marine #042E60 ΔE 0.047
- Midnight Blue #191970 ΔE 0.048
- Prussian Blue #1D3557 ΔE 0.059
- Twilight Blue #0A437A ΔE 0.067
- Royal #0C1793 ΔE 0.075
- Space Cadet #2B2D42 ΔE 0.087
- Dark Slate Blue #483D8B ΔE 0.088
Use #252B72 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.