#281D40
Closest named color: Oxford Blue (#1B263B). oklch(26.3% 0.064 296.2), rgb(40, 29, 64).
Aa
White text reads best on this color (15.67:1).
About this color
#281D40 is a dark, muted purple. In OKLCH its lightness is 26%, its chroma 0.064 and its hue 296°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.038 away. White text reads best on it, at 15.67:1.
| Hue family | Purples |
| Lightness | dark (26%) |
| Chroma | muted (0.064) |
| Temperature | in between |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.34:1 |
| White text | 15.67:1 |
Values
| HEX | #281D40 |
| RGB | rgb(40, 29, 64) |
| HSL | hsl(259, 38%, 18%) |
| OKLCH | oklch(26.3% 0.064 296.2) |
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 #281D40 | 15.67:1 | AAA | Lc -105.2 | Preferred for body text |
| Black text on #281D40 | 1.34:1 | Fails | Lc 0.0 | Not readable |
| #281D40 text on white | 15.67:1 | AAA | Lc 102.5 | Preferred for body text |
| #281D40 text on black | 1.34:1 | 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
#F6F4FC
oklch(97.1% 0.011 297.6)
-
Step 100
100
#EBE7F7
oklch(93.6% 0.022 297.4)
-
Step 200
200
#DBD4F3
oklch(88.5% 0.043 295.9)
-
Step 300
300
#C5B7ED
oklch(80.9% 0.077 296.5)
-
Step 400
400
#A890E4
oklch(70.8% 0.122 296.3)
-
Step 500
500
#9372DC
oklch(63.1% 0.156 296)
-
Step 600
600
#7E58C9
oklch(55.6% 0.169 295.9)
-
Step 700
700
#6B47AE
oklch(49.1% 0.158 296.2)
-
Step 800
800
#573B8D
oklch(42.7% 0.131 296.2)
-
Step 900
900
#473470
oklch(37.7% 0.1 295.8)
-
Step 950
950 (this color)
#281D40
oklch(26.3% 0.064 296.2)
#281D40 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) | #112341 | 0.039 |
| Deuteranopia (no green cones) | #13233F | 0.038 |
| Tritanopia (no blue cones) | #23242B | 0.052 |
| Achromatopsia (no color) | #232323 | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #281D40
#281D40
oklch(26.3% 0.064 296.2)
- #232800
#232800
oklch(26.3% 0.06 116.7)
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 #281D40, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.038
- Dark #1B2431 ΔE 0.046
- Space Cadet #2B2D42 ΔE 0.051
- Dark Purple #35063E ΔE 0.056
- Eggplant #380835 ΔE 0.058
- Jet #212529 ΔE 0.058
- Dark Indigo #1F0954 ΔE 0.064
- Deep Purple #36013F ΔE 0.065
Use #281D40 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.