#281A37
Closest named color: Oxford Blue (#1B263B). oklch(25% 0.056 305), rgb(40, 26, 55).
Aa
White text reads best on this color (16.23:1).
About this color
#281A37 is a dark, muted purple. In OKLCH its lightness is 25%, its chroma 0.056 and its hue 305°. 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 16.23:1.
| Hue family | Purples |
| Lightness | dark (25%) |
| Chroma | muted (0.056) |
| Temperature | in between |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.29:1 |
| White text | 16.23:1 |
Values
| HEX | #281A37 |
| RGB | rgb(40, 26, 55) |
| HSL | hsl(269, 36%, 16%) |
| OKLCH | oklch(25% 0.056 305) |
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 #281A37 | 16.23:1 | AAA | Lc -105.6 | Preferred for body text |
| Black text on #281A37 | 1.29:1 | Fails | Lc 0.0 | Not readable |
| #281A37 text on white | 16.23:1 | AAA | Lc 103.1 | Preferred for body text |
| #281A37 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
#F7F4FA
oklch(97.1% 0.009 308.4)
-
Step 100
100
#EDE7F4
oklch(93.6% 0.018 306.7)
-
Step 200
200
#DFD3ED
oklch(88.4% 0.037 306.4)
-
Step 300
300
#CAB6E4
oklch(80.8% 0.067 304.7)
-
Step 400
400
#B08FD6
oklch(70.6% 0.107 305.1)
-
Step 500
500
#9D72CB
oklch(63.1% 0.136 305.1)
-
Step 600
600
#8859B7
oklch(55.6% 0.147 305.2)
-
Step 700
700
#73489E
oklch(49% 0.138 305)
-
Step 800
800
#5E3C80
oklch(42.8% 0.113 305.2)
-
Step 900
900
#4D3467
oklch(37.8% 0.088 305.2)
-
Step 950
950 (this color)
#281A37
oklch(25% 0.056 305)
#281A37 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) | #122038 | 0.041 |
| Deuteranopia (no green cones) | #162036 | 0.036 |
| Tritanopia (no blue cones) | #261F25 | 0.043 |
| Achromatopsia (no color) | #202020 | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #281A37
#281A37
oklch(25% 0.056 305)
- #1C2604
#1C2604
oklch(25% 0.056 124.3)
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 #281A37, 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 0.043
- Eggplant #380835 ΔE 0.051
- Jet #212529 ΔE 0.053
- Dark Purple #35063E ΔE 0.053
- Rich Black #0D1B2A ΔE 0.056
- Aubergine #3D0734 ΔE 0.059
- Space Cadet #2B2D42 ΔE 0.061
Use #281A37 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.