#281F31
Closest named color: Dark (#1B2431). oklch(25.8% 0.035 306.9), rgb(40, 31, 49).
Aa
White text reads best on this color (15.78:1).
About this color
#281F31 is a dark, muted purple. In OKLCH its lightness is 26%, its chroma 0.035 and its hue 307°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark (#1B2431), ΔE 0.027 away. White text reads best on it, at 15.78:1.
| Hue family | Purples |
| Lightness | dark (26%) |
| Chroma | muted (0.035) |
| Temperature | in between |
| Nearest name | Dark (#1B2431) |
| Black text | 1.33:1 |
| White text | 15.78:1 |
Values
| HEX | #281F31 |
| RGB | rgb(40, 31, 49) |
| HSL | hsl(270, 23%, 16%) |
| OKLCH | oklch(25.8% 0.035 306.9) |
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 #281F31 | 15.78:1 | AAA | Lc -105.3 | Preferred for body text |
| Black text on #281F31 | 1.33:1 | Fails | Lc 0.0 | Not readable |
| #281F31 text on white | 15.78:1 | AAA | Lc 102.7 | Preferred for body text |
| #281F31 text on black | 1.33:1 | 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
#F6F4F8
oklch(97% 0.006 308.4)
-
Step 100
100
#ECE8F0
oklch(93.6% 0.011 308.3)
-
Step 200
200
#DDD5E5
oklch(88.4% 0.023 308.2)
-
Step 300
300
#C7BAD6
oklch(80.8% 0.041 306.4)
-
Step 400
400
#AB96C2
oklch(70.7% 0.067 306.4)
-
Step 500
500
#977CB2
oklch(63.2% 0.085 307)
-
Step 600
600
#82649E
oklch(55.6% 0.094 307.3)
-
Step 700
700
#6E5387
oklch(49.2% 0.086 307.3)
-
Step 800
800
#59446E
oklch(42.7% 0.072 306.5)
-
Step 900
900
#493A59
oklch(37.8% 0.055 306.1)
-
Step 950
950 (this color)
#281F31
oklch(25.8% 0.035 306.9)
#281F31 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) | #1C2232 | 0.023 |
| Deuteranopia (no green cones) | #1D2330 | 0.024 |
| Tritanopia (no blue cones) | #272225 | 0.028 |
| Achromatopsia (no color) | #232323 | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #281F31
#281F31
oklch(25.8% 0.035 306.9)
- #1F2714
#1F2714
oklch(25.9% 0.035 127.3)
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 #281F31, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.027
- Jet #212529 ΔE 0.032
- Oxford Blue #1B263B ΔE 0.032
- Space Cadet #2B2D42 ΔE 0.050
- Rich Black #0D1B2A ΔE 0.052
- Gunmetal #293241 ΔE 0.063
- Eggplant #380835 ΔE 0.066
- Aubergine #3D0734 ΔE 0.070
Use #281F31 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.