#281A39
Closest named color: Oxford Blue (#1B263B). oklch(25.2% 0.059 303.3), rgb(40, 26, 57).
Aa
White text reads best on this color (16.19:1).
About this color
#281A39 is a dark, muted purple. In OKLCH its lightness is 25%, its chroma 0.059 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 0.042 away. White text reads best on it, at 16.19:1.
| Hue family | Purples |
| Lightness | dark (25%) |
| Chroma | muted (0.059) |
| Temperature | in between |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.29:1 |
| White text | 16.19:1 |
Values
| HEX | #281A39 |
| RGB | rgb(40, 26, 57) |
| HSL | hsl(267, 37%, 16%) |
| OKLCH | oklch(25.2% 0.059 303.3) |
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 #281A39 | 16.19:1 | AAA | Lc -105.6 | Preferred for body text |
| Black text on #281A39 | 1.29:1 | Fails | Lc 0.0 | Not readable |
| #281A39 text on white | 16.19:1 | AAA | Lc 103.1 | Preferred for body text |
| #281A39 text on black | 1.29:1 | 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
#F7F4FB
oklch(97.1% 0.01 305.4)
-
Step 100
100
#ECE7F5
oklch(93.6% 0.019 302.2)
-
Step 200
200
#DED3EF
oklch(88.4% 0.04 303.4)
-
Step 300
300
#CAB6E6
oklch(80.9% 0.07 303.8)
-
Step 400
400
#AF8FDA
oklch(70.7% 0.112 303.3)
-
Step 500
500
#9C71D0
oklch(63.1% 0.144 303.4)
-
Step 600
600
#8758BC
oklch(55.7% 0.154 303.5)
-
Step 700
700
#7247A3
oklch(49.1% 0.145 303)
-
Step 800
800
#5D3B84
oklch(42.7% 0.12 303.2)
-
Step 900
900
#4C336A
oklch(37.7% 0.094 303.2)
-
Step 950
950 (this color)
#281A39
oklch(25.2% 0.059 303.3)
#281A39 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) | #11203A | 0.042 |
| Deuteranopia (no green cones) | #152138 | 0.039 |
| Tritanopia (no blue cones) | #251F26 | 0.044 |
| Achromatopsia (no color) | #212121 | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #281A39
#281A39
oklch(25.2% 0.059 303.3)
- #1D2602
#1D2602
oklch(25.1% 0.058 122.5)
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 #281A39, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.042
- Dark #1B2431 ΔE 0.045
- Eggplant #380835 ΔE 0.051
- Dark Purple #35063E ΔE 0.052
- Jet #212529 ΔE 0.055
- Rich Black #0D1B2A ΔE 0.058
- Aubergine #3D0734 ΔE 0.059
- Space Cadet #2B2D42 ΔE 0.060
Use #281A39 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.