#25285D
Closest named color: Marine (#042E60). oklch(30.6% 0.093 277), rgb(37, 40, 93).
Aa
White text reads best on this color (13.63:1).
About this color
#25285D is a dark, moderately saturated blue. In OKLCH its lightness is 31%, its chroma 0.093 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.035 away. White text reads best on it, at 13.63:1.
| Hue family | Blues |
| Lightness | dark (31%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.54:1 |
| White text | 13.63:1 |
Values
| HEX | #25285D |
| RGB | rgb(37, 40, 93) |
| HSL | hsl(237, 43%, 25%) |
| OKLCH | oklch(30.6% 0.093 277) |
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 #25285D | 13.63:1 | AAA | Lc -103.1 | Preferred for body text |
| Black text on #25285D | 1.54:1 | Fails | Lc 0.0 | Not readable |
| #25285D text on white | 13.63:1 | AAA | Lc 100.0 | Preferred for body text |
| #25285D 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
#F3F5FF
oklch(97.2% 0.013 277.1)
-
Step 100
100
#E4E9FF
oklch(93.7% 0.03 275.6)
-
Step 200
200
#CFD7FF
oklch(88.6% 0.056 276.3)
-
Step 300
300
#B0BBFF
oklch(80.8% 0.097 276.9)
-
Step 400
400
#8995FF
oklch(70.7% 0.154 276.8)
-
Step 500
500
#6F76FF
oklch(63.2% 0.2 276.8)
-
Step 600
600
#5A51FD
oklch(55.6% 0.245 277.2)
-
Step 700
700
#4B40DD
oklch(49.2% 0.228 277.1)
-
Step 800
800
#3C36B2
oklch(42.6% 0.189 276.9)
-
Step 900
900
#32328D
oklch(37.8% 0.147 276.7)
-
Step 950
950 (this color)
#25285D
oklch(30.6% 0.093 277)
#25285D 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) | #09305F | 0.035 |
| Deuteranopia (no green cones) | #002B5C | 0.038 |
| Tritanopia (no blue cones) | #07343E | 0.081 |
| Achromatopsia (no color) | #2E2E2E | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #25285D
#25285D
oklch(30.6% 0.093 277)
- #382F00
#382F00
oklch(30.6% 0.063 97.6)
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 #25285D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.035
- Prussian Blue #1D3557 ΔE 0.043
- Marine Blue #01386A ΔE 0.054
- Midnight Blue #191970 ΔE 0.055
- Space Cadet #2B2D42 ΔE 0.055
- Oxford Blue #1B263B ΔE 0.065
- Gunmetal #293241 ΔE 0.066
- Dark Blue Grey #1F3B4D ΔE 0.071
Use #25285D 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.