#281A3B
Closest named color: Oxford Blue (#1B263B). oklch(25.3% 0.062 301.7), rgb(40, 26, 59).
Aa
White text reads best on this color (16.13:1).
About this color
#281A3B is a dark, muted purple. In OKLCH its lightness is 25%, its chroma 0.062 and its hue 302°. 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 16.13:1.
| Hue family | Purples |
| Lightness | dark (25%) |
| Chroma | muted (0.062) |
| Temperature | in between |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.30:1 |
| White text | 16.13:1 |
Values
| HEX | #281A3B |
| RGB | rgb(40, 26, 59) |
| HSL | hsl(265, 39%, 17%) |
| OKLCH | oklch(25.3% 0.062 301.7) |
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 #281A3B | 16.13:1 | AAA | Lc -105.5 | Preferred for body text |
| Black text on #281A3B | 1.30:1 | Fails | Lc 0.0 | Not readable |
| #281A3B text on white | 16.13:1 | AAA | Lc 103.0 | Preferred for body text |
| #281A3B text on black | 1.30:1 | 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
#ECE7F6
oklch(93.6% 0.021 301.1)
-
Step 200
200
#DED3F0
oklch(88.5% 0.041 302.8)
-
Step 300
300
#C9B6E9
oklch(80.9% 0.074 301.8)
-
Step 400
400
#AE8EDE
oklch(70.6% 0.119 301.8)
-
Step 500
500
#9B70D4
oklch(63.1% 0.15 302.1)
-
Step 600
600
#8656C2
oklch(55.6% 0.164 301.8)
-
Step 700
700
#7146A7
oklch(49.1% 0.151 301.5)
-
Step 800
800
#5C3A87
oklch(42.6% 0.125 301.7)
-
Step 900
900
#4B336C
oklch(37.7% 0.097 301.4)
-
Step 950
950 (this color)
#281A3B
oklch(25.3% 0.062 301.7)
#281A3B 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) | #10213C | 0.043 |
| Deuteranopia (no green cones) | #13213A | 0.041 |
| Tritanopia (no blue cones) | #242027 | 0.048 |
| Achromatopsia (no color) | #212121 | 0.062 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #281A3B
#281A3B
oklch(25.3% 0.062 301.7)
- #1E2700
#1E2700
oklch(25.5% 0.062 121.9)
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 #281A3B, 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 0.047
- Dark Purple #35063E ΔE 0.051
- Eggplant #380835 ΔE 0.051
- Jet #212529 ΔE 0.058
- Aubergine #3D0734 ΔE 0.059
- Deep Purple #36013F ΔE 0.060
- Rich Black #0D1B2A ΔE 0.060
Use #281A3B 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.