#281731
Closest named color: Dark (#1B2431). oklch(24% 0.053 313.1), rgb(40, 23, 49).
Aa
White text reads best on this color (16.70:1).
About this color
#281731 is a very dark, muted purple. In OKLCH its lightness is 24%, its chroma 0.053 and its hue 313°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark (#1B2431), ΔE 0.047 away. White text reads best on it, at 16.70:1.
| Hue family | Purples |
| Lightness | very dark (24%) |
| Chroma | muted (0.053) |
| Temperature | in between |
| Nearest name | Dark (#1B2431) |
| Black text | 1.25:1 |
| White text | 16.70:1 |
Values
| HEX | #281731 |
| RGB | rgb(40, 23, 49) |
| HSL | hsl(279, 36%, 14%) |
| OKLCH | oklch(24% 0.053 313.1) |
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 #281731 | 16.70:1 | AAA | Lc -106.0 | Preferred for body text |
| Black text on #281731 | 1.25:1 | Fails | Lc 0.0 | Not readable |
| #281731 text on white | 16.70:1 | AAA | Lc 103.5 | Preferred for body text |
| #281731 text on black | 1.25:1 | 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
#EEE7F3
oklch(93.7% 0.018 311.6)
-
Step 200
200
#E1D3EA
oklch(88.5% 0.035 312.4)
-
Step 300
300
#CFB5DE
oklch(80.8% 0.063 313.2)
-
Step 400
400
#B78ECD
oklch(70.7% 0.1 313.5)
-
Step 500
500
#A471C0
oklch(63.1% 0.127 312.8)
-
Step 600
600
#8F57AD
oklch(55.5% 0.14 312.7)
-
Step 700
700
#7A4794
oklch(49.1% 0.129 313.1)
-
Step 800
800
#633B78
oklch(42.7% 0.107 312.9)
-
Step 900
900
#513361
oklch(37.7% 0.084 313)
-
Step 950
950 (this color)
#281731
oklch(24% 0.053 313.1)
#281731 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) | #121D32 | 0.043 |
| Deuteranopia (no green cones) | #161E30 | 0.039 |
| Tritanopia (no blue cones) | #271B21 | 0.037 |
| Achromatopsia (no color) | #1E1E1E | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #281731
#281731
oklch(24% 0.053 313.1)
- #152408
#152408
oklch(23.9% 0.052 132.7)
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 #281731, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.047
- Eggplant #380835 ΔE 0.048
- Oxford Blue #1B263B ΔE 0.051
- Rich Black #0D1B2A ΔE 0.053
- Dark Purple #35063E ΔE 0.053
- Jet #212529 ΔE 0.054
- Very Dark Purple #2A0134 ΔE 0.055
- Aubergine #3D0734 ΔE 0.056
Use #281731 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.