#25233B
Closest named color: Oxford Blue (#1B263B). oklch(27% 0.044 286.9), rgb(37, 35, 59).
Aa
White text reads best on this color (15.19:1).
About this color
#25233B is a dark, muted purple. In OKLCH its lightness is 27%, its chroma 0.044 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.018 away. White text reads best on it, at 15.19:1.
| Hue family | Purples |
| Lightness | dark (27%) |
| Chroma | muted (0.044) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.38:1 |
| White text | 15.19:1 |
Values
| HEX | #25233B |
| RGB | rgb(37, 35, 59) |
| HSL | hsl(245, 26%, 18%) |
| OKLCH | oklch(27% 0.044 286.9) |
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 #25233B | 15.19:1 | AAA | Lc -104.8 | Preferred for body text |
| Black text on #25233B | 1.38:1 | Fails | Lc 0.0 | Not readable |
| #25233B text on white | 15.19:1 | AAA | Lc 102.1 | Preferred for body text |
| #25233B text on black | 1.38:1 | 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
#F5F5FA
oklch(97.2% 0.007 286.3)
-
Step 100
100
#E9E9F4
oklch(93.7% 0.015 286.1)
-
Step 200
200
#D7D7EC
oklch(88.6% 0.029 285.8)
-
Step 300
300
#BEBCE1
oklch(80.9% 0.052 287.7)
-
Step 400
400
#9C99D3
oklch(70.7% 0.084 286.4)
-
Step 500
500
#857FC7
oklch(63.1% 0.107 286.7)
-
Step 600
600
#6F67B3
oklch(55.5% 0.116 286.8)
-
Step 700
700
#5D559A
oklch(49% 0.108 287)
-
Step 800
800
#4C467D
oklch(42.6% 0.089 287)
-
Step 900
900
#3F3B65
oklch(37.6% 0.071 286.8)
-
Step 950
950 (this color)
#25233B
oklch(27% 0.044 286.9)
#25233B 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) | #1C263C | 0.017 |
| Deuteranopia (no green cones) | #1C253A | 0.016 |
| Tritanopia (no blue cones) | #20272C | 0.036 |
| Achromatopsia (no color) | #262626 | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #25233B
#25233B
oklch(27% 0.044 286.9)
- #29280C
#29280C
oklch(27.1% 0.044 107.1)
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 #25233B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.018
- Dark #1B2431 ΔE 0.027
- Space Cadet #2B2D42 ΔE 0.035
- Jet #212529 ΔE 0.038
- Gunmetal #293241 ΔE 0.050
- Rich Black #0D1B2A ΔE 0.059
- Prussian Blue #1D3557 ΔE 0.068
- Eggplant #380835 ΔE 0.074
Use #25233B 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.