#252B53
Closest named color: Prussian Blue (#1D3557). oklch(30.6% 0.072 274.9), rgb(37, 43, 83).
Aa
White text reads best on this color (13.55:1).
About this color
#252B53 is a dark, moderately saturated blue. In OKLCH its lightness is 31%, its chroma 0.072 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.031 away. White text reads best on it, at 13.55:1.
| Hue family | Blues |
| Lightness | dark (31%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.54:1 |
| White text | 13.55:1 |
Values
| HEX | #252B53 |
| RGB | rgb(37, 43, 83) |
| HSL | hsl(232, 38%, 24%) |
| OKLCH | oklch(30.6% 0.072 274.9) |
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 #252B53 | 13.55:1 | AAA | Lc -103.1 | Preferred for body text |
| Black text on #252B53 | 1.54:1 | Fails | Lc 0.0 | Not readable |
| #252B53 text on white | 13.55:1 | AAA | Lc 99.9 | Preferred for body text |
| #252B53 text on black | 1.54:1 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E5E9FB
oklch(93.6% 0.025 275.9)
-
Step 200
200
#CFD7F9
oklch(88.4% 0.048 274.9)
-
Step 300
300
#B0BDF8
oklch(80.9% 0.085 274.7)
-
Step 400
400
#8898F5
oklch(70.7% 0.137 275)
-
Step 500
500
#6D7CF1
oklch(63.2% 0.174 274.8)
-
Step 600
600
#5761DF
oklch(55.5% 0.189 275)
-
Step 700
700
#484FC2
oklch(49% 0.177 275.1)
-
Step 800
800
#3B429D
oklch(42.8% 0.146 275.1)
-
Step 900
900
#32397D
oklch(37.8% 0.114 275.1)
-
Step 950
950 (this color)
#252B53
oklch(30.6% 0.072 274.9)
#252B53 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) | #1A3055 | 0.020 |
| Deuteranopia (no green cones) | #162C52 | 0.020 |
| Tritanopia (no blue cones) | #12343B | 0.064 |
| Achromatopsia (no color) | #2E2E2E | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #252B53
#252B53
oklch(30.6% 0.072 274.9)
- #392E00
#392E00
oklch(30.4% 0.062 94.6)
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 #252B53, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.031
- Space Cadet #2B2D42 ΔE 0.034
- Marine #042E60 ΔE 0.039
- Gunmetal #293241 ΔE 0.045
- Oxford Blue #1B263B ΔE 0.048
- Dark Blue Grey #1F3B4D ΔE 0.055
- Marine Blue #01386A ΔE 0.056
- Midnight Green #073B4C ΔE 0.060
Use #252B53 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.