#281838
Closest named color: Oxford Blue (#1B263B). oklch(24.7% 0.062 305.4), rgb(40, 24, 56).
Aa
White text reads best on this color (16.43:1).
About this color
#281838 is a very dark, muted purple. In OKLCH its lightness is 25%, its chroma 0.062 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 0.047 away. White text reads best on it, at 16.43:1.
| Hue family | Purples |
| Lightness | very dark (25%) |
| Chroma | muted (0.062) |
| Temperature | in between |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.27:1 |
| White text | 16.43:1 |
Values
| HEX | #281838 |
| RGB | rgb(40, 24, 56) |
| HSL | hsl(270, 40%, 16%) |
| OKLCH | oklch(24.7% 0.062 305.4) |
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 #281838 | 16.43:1 | AAA | Lc -105.8 | Preferred for body text |
| Black text on #281838 | 1.27:1 | Fails | Lc 0.0 | Not readable |
| #281838 text on white | 16.43:1 | AAA | Lc 103.3 | Preferred for body text |
| #281838 text on black | 1.27:1 | 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
#EDE7F5
oklch(93.7% 0.02 305.3)
-
Step 200
200
#DFD3EF
oklch(88.5% 0.04 304.9)
-
Step 300
300
#CCB5E7
oklch(80.9% 0.073 305.7)
-
Step 400
400
#B28DDB
oklch(70.7% 0.117 305.4)
-
Step 500
500
#9F6FD0
oklch(63.1% 0.148 305.4)
-
Step 600
600
#8A55BD
oklch(55.6% 0.161 305.3)
-
Step 700
700
#7644A3
oklch(49.1% 0.151 305.9)
-
Step 800
800
#603984
oklch(42.7% 0.124 305.8)
-
Step 900
900
#4E326A
oklch(37.7% 0.097 305.3)
-
Step 950
950 (this color)
#281838
oklch(24.7% 0.062 305.4)
#281838 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) | #0F1F39 | 0.046 |
| Deuteranopia (no green cones) | #131F37 | 0.042 |
| Tritanopia (no blue cones) | #251E25 | 0.046 |
| Achromatopsia (no color) | #1F1F1F | 0.062 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #281838
#281838
oklch(24.7% 0.062 305.4)
- #1A2601
#1A2601
oklch(24.8% 0.061 125.8)
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 #281838, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.047
- Eggplant #380835 ΔE 0.047
- Dark Purple #35063E ΔE 0.048
- Dark #1B2431 ΔE 0.049
- Very Dark Purple #2A0134 ΔE 0.055
- Midnight Purple #280137 ΔE 0.056
- Aubergine #3D0734 ΔE 0.056
- Deep Purple #36013F ΔE 0.057
Use #281838 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.