#25255D
Closest named color: Marine (#042E60). oklch(30% 0.098 278.8), rgb(37, 37, 93).
Aa
White text reads best on this color (13.98:1).
About this color
#25255D is a dark, moderately saturated blue. In OKLCH its lightness is 30%, its chroma 0.098 and its hue 279°. 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 13.98:1.
| Hue family | Blues |
| Lightness | dark (30%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.50:1 |
| White text | 13.98:1 |
Values
| HEX | #25255D |
| RGB | rgb(37, 37, 93) |
| HSL | hsl(240, 43%, 25%) |
| OKLCH | oklch(30% 0.098 278.8) |
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 #25255D | 13.98:1 | AAA | Lc -103.5 | Preferred for body text |
| Black text on #25255D | 1.50:1 | Fails | Lc 0.0 | Not readable |
| #25255D text on white | 13.98:1 | AAA | Lc 100.4 | Preferred for body text |
| #25255D 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
#E5E8FF
oklch(93.6% 0.031 279.9)
-
Step 200
200
#D0D6FF
oklch(88.5% 0.057 278.6)
-
Step 300
300
#B2BBFF
oklch(81% 0.097 278.2)
-
Step 400
400
#8D94FF
oklch(70.8% 0.155 278.8)
-
Step 500
500
#7374FF
oklch(63.1% 0.202 278.6)
-
Step 600
600
#5F4EFF
oklch(55.7% 0.249 278.8)
-
Step 700
700
#4F3AE2
oklch(49.1% 0.238 278.6)
-
Step 800
800
#4032B6
oklch(42.7% 0.197 278.7)
-
Step 900
900
#352F90
oklch(37.7% 0.154 278.8)
-
Step 950
950 (this color)
#25255D
oklch(30% 0.098 278.8)
#25255D 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) | #002E5F | 0.041 |
| Deuteranopia (no green cones) | #002A5C | 0.040 |
| Tritanopia (no blue cones) | #07323D | 0.084 |
| Achromatopsia (no color) | #2C2C2C | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #25255D
#25255D
oklch(30% 0.098 278.8)
- #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 #25255D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.039
- Midnight Blue #191970 ΔE 0.049
- Prussian Blue #1D3557 ΔE 0.051
- Space Cadet #2B2D42 ΔE 0.060
- Marine Blue #01386A ΔE 0.060
- Oxford Blue #1B263B ΔE 0.066
- Dark Indigo #1F0954 ΔE 0.067
- Gunmetal #293241 ΔE 0.072
Use #25255D 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.