#252C5D
Closest named color: Prussian Blue (#1D3557). oklch(31.5% 0.087 274.2), rgb(37, 44, 93).
Aa
White text reads best on this color (13.14:1).
About this color
#252C5D is a dark, moderately saturated blue. In OKLCH its lightness is 32%, its chroma 0.087 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.032 away. White text reads best on it, at 13.14:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.59:1 |
| White text | 13.14:1 |
Values
| HEX | #252C5D |
| RGB | rgb(37, 44, 93) |
| HSL | hsl(233, 43%, 25%) |
| OKLCH | oklch(31.5% 0.087 274.2) |
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 #252C5D | 13.14:1 | AAA | Lc -102.5 | Preferred for body text |
| Black text on #252C5D | 1.59:1 | Fails | Lc 0.0 | Not readable |
| #252C5D text on white | 13.14:1 | AAA | Lc 99.3 | Preferred for body text |
| #252C5D text on black | 1.59:1 | 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
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E3E9FE
oklch(93.6% 0.029 273.1)
-
Step 200
200
#CDD7FF
oklch(88.4% 0.056 274.2)
-
Step 300
300
#ADBCFF
oklch(80.8% 0.096 274.3)
-
Step 400
400
#8497FF
oklch(70.7% 0.153 274)
-
Step 500
500
#6878FF
oklch(63.1% 0.199 274.1)
-
Step 600
600
#5259F5
oklch(55.6% 0.228 274.2)
-
Step 700
700
#4447D6
oklch(49.1% 0.213 274.3)
-
Step 800
800
#373CAD
oklch(42.8% 0.176 274.1)
-
Step 900
900
#2E3589
oklch(37.7% 0.138 274.1)
-
Step 950
950 (this color)
#252C5D
oklch(31.5% 0.087 274.2)
#252C5D 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) | #14335F | 0.026 |
| Deuteranopia (no green cones) | #0C2E5C | 0.028 |
| Tritanopia (no blue cones) | #063740 | 0.076 |
| Achromatopsia (no color) | #303030 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #252C5D
#252C5D
oklch(31.5% 0.087 274.2)
- #3C3100
#3C3100
oklch(31.6% 0.065 95.3)
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 #252C5D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.032
- Marine #042E60 ΔE 0.033
- Marine Blue #01386A ΔE 0.045
- Space Cadet #2B2D42 ΔE 0.050
- Gunmetal #293241 ΔE 0.058
- Dark Blue Grey #1F3B4D ΔE 0.061
- Midnight Blue #191970 ΔE 0.063
- Oxford Blue #1B263B ΔE 0.065
Use #252C5D 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.