#251939
Closest named color: Oxford Blue (#1B263B). oklch(24.6% 0.06 299.2), rgb(37, 25, 57).
Aa
White text reads best on this color (16.44:1).
About this color
#251939 is a very dark, muted purple. In OKLCH its lightness is 25%, its chroma 0.060 and its hue 299°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.043 away. White text reads best on it, at 16.44:1.
| Hue family | Purples |
| Lightness | very dark (25%) |
| Chroma | muted (0.060) |
| Temperature | in between |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.27:1 |
| White text | 16.44:1 |
Values
| HEX | #251939 |
| RGB | rgb(37, 25, 57) |
| HSL | hsl(263, 39%, 16%) |
| OKLCH | oklch(24.6% 0.06 299.2) |
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 #251939 | 16.44:1 | AAA | Lc -105.8 | Preferred for body text |
| Black text on #251939 | 1.27:1 | Fails | Lc 0.0 | Not readable |
| #251939 text on white | 16.44:1 | AAA | Lc 103.3 | Preferred for body text |
| #251939 text on black | 1.27:1 | 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
#F6F4FB
oklch(97.1% 0.009 299.2)
-
Step 100
100
#EBE7F6
oklch(93.5% 0.021 298.2)
-
Step 200
200
#DCD4F0
oklch(88.5% 0.039 298.7)
-
Step 300
300
#C7B7E9
oklch(80.9% 0.071 299.4)
-
Step 400
400
#AB90DE
oklch(70.7% 0.115 299.4)
-
Step 500
500
#9773D4
oklch(63.2% 0.145 299.4)
-
Step 600
600
#8259C1
oklch(55.6% 0.158 299.4)
-
Step 700
700
#6E48A7
oklch(49.1% 0.148 299.4)
-
Step 800
800
#593C87
oklch(42.7% 0.121 299)
-
Step 900
900
#49346C
oklch(37.7% 0.095 299.1)
-
Step 950
950 (this color)
#251939
oklch(24.6% 0.06 299.2)
#251939 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) | #0F1F3A | 0.039 |
| Deuteranopia (no green cones) | #121F38 | 0.036 |
| Tritanopia (no blue cones) | #211F26 | 0.047 |
| Achromatopsia (no color) | #1F1F1F | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #251939
#251939
oklch(24.6% 0.06 299.2)
- #1E2400
#1E2400
oklch(24.6% 0.058 118.6)
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 #251939, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.043
- Dark #1B2431 ΔE 0.045
- Rich Black #0D1B2A ΔE 0.053
- Dark Purple #35063E ΔE 0.053
- Eggplant #380835 ΔE 0.054
- Jet #212529 ΔE 0.057
- Midnight Purple #280137 ΔE 0.058
- Very Dark Purple #2A0134 ΔE 0.059
Use #251939 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.