#281C31
Closest named color: Dark (#1B2431). oklch(25.1% 0.042 309.8), rgb(40, 28, 49).
Aa
White text reads best on this color (16.14:1).
About this color
#281C31 is a dark, muted purple. In OKLCH its lightness is 25%, its chroma 0.042 and its hue 310°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark (#1B2431), ΔE 0.034 away. White text reads best on it, at 16.14:1.
| Hue family | Purples |
| Lightness | dark (25%) |
| Chroma | muted (0.042) |
| Temperature | in between |
| Nearest name | Dark (#1B2431) |
| Black text | 1.30:1 |
| White text | 16.14:1 |
Values
| HEX | #281C31 |
| RGB | rgb(40, 28, 49) |
| HSL | hsl(274, 27%, 15%) |
| OKLCH | oklch(25.1% 0.042 309.8) |
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 #281C31 | 16.14:1 | AAA | Lc -105.6 | Preferred for body text |
| Black text on #281C31 | 1.30:1 | Fails | Lc 0.0 | Not readable |
| #281C31 text on white | 16.14:1 | AAA | Lc 103.1 | Preferred for body text |
| #281C31 text on black | 1.30:1 | 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
#F7F4F9
oklch(97.1% 0.007 312.3)
-
Step 100
100
#EDE7F1
oklch(93.6% 0.015 312.2)
-
Step 200
200
#DFD4E7
oklch(88.4% 0.028 311.3)
-
Step 300
300
#CAB8D9
oklch(80.8% 0.05 309.7)
-
Step 400
400
#B093C6
oklch(70.7% 0.079 310.2)
-
Step 500
500
#9C78B8
oklch(63.2% 0.101 309.5)
-
Step 600
600
#8760A4
oklch(55.7% 0.111 309.6)
-
Step 700
700
#724F8C
oklch(49.1% 0.102 309.5)
-
Step 800
800
#5D4172
oklch(42.7% 0.085 309.5)
-
Step 900
900
#4C375C
oklch(37.6% 0.067 309.5)
-
Step 950
950 (this color)
#281C31
oklch(25.1% 0.042 309.8)
#281C31 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) | #182032 | 0.031 |
| Deuteranopia (no green cones) | #1B2130 | 0.028 |
| Tritanopia (no blue cones) | #271F24 | 0.030 |
| Achromatopsia (no color) | #212121 | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #281C31
#281C31
oklch(25.1% 0.042 309.8)
- #1B260F
#1B260F
oklch(25.1% 0.043 130)
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 #281C31, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.034
- Oxford Blue #1B263B ΔE 0.038
- Jet #212529 ΔE 0.040
- Rich Black #0D1B2A ΔE 0.051
- Space Cadet #2B2D42 ΔE 0.058
- Eggplant #380835 ΔE 0.058
- Aubergine #3D0734 ΔE 0.064
- Dark Purple #35063E ΔE 0.064
Use #281C31 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.