#281D37
Closest named color: Oxford Blue (#1B263B). oklch(25.7% 0.05 302.6), rgb(40, 29, 55).
Aa
White text reads best on this color (15.89:1).
About this color
#281D37 is a dark, muted purple. In OKLCH its lightness is 26%, its chroma 0.050 and its hue 303°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.034 away. White text reads best on it, at 15.89:1.
| Hue family | Purples |
| Lightness | dark (26%) |
| Chroma | muted (0.050) |
| Temperature | in between |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.32:1 |
| White text | 15.89:1 |
Values
| HEX | #281D37 |
| RGB | rgb(40, 29, 55) |
| HSL | hsl(265, 31%, 16%) |
| OKLCH | oklch(25.7% 0.05 302.6) |
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 #281D37 | 15.89:1 | AAA | Lc -105.4 | Preferred for body text |
| Black text on #281D37 | 1.32:1 | Fails | Lc 0.0 | Not readable |
| #281D37 text on white | 15.89:1 | AAA | Lc 102.8 | Preferred for body text |
| #281D37 text on black | 1.32:1 | 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
#F6F4FA
oklch(97% 0.008 301.4)
-
Step 100
100
#ECE7F4
oklch(93.6% 0.018 303.4)
-
Step 200
200
#DDD4EB
oklch(88.4% 0.033 303.4)
-
Step 300
300
#C8B8E1
oklch(80.9% 0.059 302.9)
-
Step 400
400
#AC92D1
oklch(70.6% 0.094 303)
-
Step 500
500
#9876C5
oklch(63% 0.121 302.9)
-
Step 600
600
#835EB2
oklch(55.7% 0.131 302.7)
-
Step 700
700
#6F4D99
oklch(49.1% 0.122 302.8)
-
Step 800
800
#5A407C
oklch(42.8% 0.1 302.4)
-
Step 900
900
#4A3664
oklch(37.7% 0.079 302.8)
-
Step 950
950 (this color)
#281D37
oklch(25.7% 0.05 302.6)
#281D37 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) | #172238 | 0.032 |
| Deuteranopia (no green cones) | #192236 | 0.030 |
| Tritanopia (no blue cones) | #252127 | 0.037 |
| Achromatopsia (no color) | #222222 | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #281D37
#281D37
oklch(25.7% 0.05 302.6)
- #1F2709
#1F2709
oklch(25.7% 0.05 122.6)
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 #281D37, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.034
- Dark #1B2431 ΔE 0.036
- Jet #212529 ΔE 0.045
- Space Cadet #2B2D42 ΔE 0.052
- Rich Black #0D1B2A ΔE 0.055
- Eggplant #380835 ΔE 0.058
- Dark Purple #35063E ΔE 0.061
- Aubergine #3D0734 ΔE 0.064
Use #281D37 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.