#281F39
Closest named color: Oxford Blue (#1B263B). oklch(26.3% 0.049 299), rgb(40, 31, 57).
Aa
White text reads best on this color (15.60:1).
About this color
#281F39 is a dark, muted purple. In OKLCH its lightness is 26%, its chroma 0.049 and its hue 299°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.030 away. White text reads best on it, at 15.60:1.
| Hue family | Purples |
| Lightness | dark (26%) |
| Chroma | muted (0.049) |
| Temperature | in between |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.34:1 |
| White text | 15.60:1 |
Values
| HEX | #281F39 |
| RGB | rgb(40, 31, 57) |
| HSL | hsl(261, 30%, 17%) |
| OKLCH | oklch(26.3% 0.049 299) |
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 #281F39 | 15.60:1 | AAA | Lc -105.2 | Preferred for body text |
| Black text on #281F39 | 1.34:1 | Fails | Lc 0.0 | Not readable |
| #281F39 text on white | 15.60:1 | AAA | Lc 102.5 | Preferred for body text |
| #281F39 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
#F6F4FA
oklch(97% 0.008 301.4)
-
Step 100
100
#EBE8F4
oklch(93.7% 0.016 297.5)
-
Step 200
200
#DCD5EC
oklch(88.6% 0.032 299.6)
-
Step 300
300
#C5B9E1
oklch(80.9% 0.057 298.8)
-
Step 400
400
#A894D3
oklch(70.7% 0.093 298.6)
-
Step 500
500
#9378C7
oklch(63% 0.119 298.7)
-
Step 600
600
#7E60B3
oklch(55.6% 0.128 298.9)
-
Step 700
700
#6B4F9A
oklch(49.1% 0.119 299.2)
-
Step 800
800
#57417D
oklch(42.7% 0.099 299.1)
-
Step 900
900
#473765
oklch(37.6% 0.078 298.6)
-
Step 950
950 (this color)
#281F39
oklch(26.3% 0.049 299)
#281F39 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) | #18243A | 0.030 |
| Deuteranopia (no green cones) | #1A2338 | 0.027 |
| Tritanopia (no blue cones) | #252329 | 0.037 |
| Achromatopsia (no color) | #242424 | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #281F39
#281F39
oklch(26.3% 0.049 299)
- #22280A
#22280A
oklch(26.3% 0.049 119.4)
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 #281F39, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.030
- Dark #1B2431 ΔE 0.034
- Jet #212529 ΔE 0.043
- Space Cadet #2B2D42 ΔE 0.046
- Rich Black #0D1B2A ΔE 0.058
- Gunmetal #293241 ΔE 0.061
- Eggplant #380835 ΔE 0.062
- Dark Purple #35063E ΔE 0.065
Use #281F39 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.