#25284D
Closest named color: Space Cadet (#2B2D42). oklch(29.4% 0.067 278), rgb(37, 40, 77).
Aa
White text reads best on this color (14.10:1).
About this color
#25284D is a dark, muted blue. In OKLCH its lightness is 29%, its chroma 0.067 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Space Cadet (#2B2D42), ΔE 0.031 away. White text reads best on it, at 14.10:1.
| Hue family | Blues |
| Lightness | dark (29%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.48:1 |
| White text | 14.10:1 |
Values
| HEX | #25284D |
| RGB | rgb(37, 40, 77) |
| HSL | hsl(236, 35%, 22%) |
| OKLCH | oklch(29.4% 0.067 278) |
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 #25284D | 14.10:1 | AAA | Lc -103.7 | Preferred for body text |
| Black text on #25284D | 1.48:1 | Fails | Lc 0.0 | Not readable |
| #25284D text on white | 14.10:1 | AAA | Lc 100.7 | Preferred for body text |
| #25284D text on black | 1.48:1 | 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
#E6E9FA
oklch(93.7% 0.023 277.9)
-
Step 200
200
#D2D7F7
oklch(88.5% 0.044 278.4)
-
Step 300
300
#B4BCF4
oklch(80.9% 0.08 278.1)
-
Step 400
400
#8E98EE
oklch(70.7% 0.126 277.6)
-
Step 500
500
#757CE9
oklch(63.2% 0.161 278)
-
Step 600
600
#5F62D7
oklch(55.6% 0.176 277.9)
-
Step 700
700
#4F50BA
oklch(49.1% 0.163 278.1)
-
Step 800
800
#404297
oklch(42.6% 0.136 277.9)
-
Step 900
900
#363978
oklch(37.7% 0.105 278)
-
Step 950
950 (this color)
#25284D
oklch(29.4% 0.067 278)
#25284D 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) | #192D4E | 0.021 |
| Deuteranopia (no green cones) | #162A4C | 0.022 |
| Tritanopia (no blue cones) | #173036 | 0.060 |
| Achromatopsia (no color) | #2B2B2B | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #25284D
#25284D
oklch(29.4% 0.067 278)
- #352C00
#352C00
oklch(29.4% 0.061 97)
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 #25284D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.031
- Oxford Blue #1B263B ΔE 0.038
- Prussian Blue #1D3557 ΔE 0.041
- Gunmetal #293241 ΔE 0.045
- Marine #042E60 ΔE 0.047
- Dark #1B2431 ΔE 0.055
- Dark Blue Grey #1F3B4D ΔE 0.062
- Midnight Green #073B4C ΔE 0.066
Use #25284D 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.