#331F37
Closest named color: Space Cadet (#2B2D42). oklch(27.6% 0.051 320.8), rgb(51, 31, 55).
Aa
White text reads best on this color (15.08:1).
About this color
#331F37 is a dark, muted purple. In OKLCH its lightness is 28%, its chroma 0.051 and its hue 321°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Space Cadet (#2B2D42), ΔE 0.045 away. White text reads best on it, at 15.08:1.
| Hue family | Purples |
| Lightness | dark (28%) |
| Chroma | muted (0.051) |
| Temperature | in between |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.39:1 |
| White text | 15.08:1 |
Values
| HEX | #331F37 |
| RGB | rgb(51, 31, 55) |
| HSL | hsl(290, 28%, 17%) |
| OKLCH | oklch(27.6% 0.051 320.8) |
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 #331F37 | 15.08:1 | AAA | Lc -104.7 | Preferred for body text |
| Black text on #331F37 | 1.39:1 | Fails | Lc 0.0 | Not readable |
| #331F37 text on white | 15.08:1 | AAA | Lc 101.9 | Preferred for body text |
| #331F37 text on black | 1.39:1 | 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
#F8F4F9
oklch(97.2% 0.008 319.4)
-
Step 100
100
#EFE6F1
oklch(93.5% 0.018 320.1)
-
Step 200
200
#E4D2E7
oklch(88.5% 0.034 321.4)
-
Step 300
300
#D3B4D9
oklch(80.8% 0.061 320.8)
-
Step 400
400
#BC8DC6
oklch(70.8% 0.096 320.4)
-
Step 500
500
#AB6FB7
oklch(63.1% 0.124 320.8)
-
Step 600
600
#9656A3
oklch(55.7% 0.134 320.7)
-
Step 700
700
#80468B
oklch(49.2% 0.124 321.1)
-
Step 800
800
#683A71
oklch(42.8% 0.103 320.9)
-
Step 900
900
#55325B
oklch(37.7% 0.08 321.6)
-
Step 950
950 (this color)
#331F37
oklch(27.6% 0.051 320.8)
#331F37 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) | #1C2538 | 0.045 |
| Deuteranopia (no green cones) | #212736 | 0.041 |
| Tritanopia (no blue cones) | #332228 | 0.033 |
| Achromatopsia (no color) | #262626 | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #331F37
#331F37
oklch(27.6% 0.051 320.8)
- #192E15
#192E15
oklch(27.6% 0.052 140.5)
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 #331F37, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.045
- Oxford Blue #1B263B ΔE 0.046
- Dark #1B2431 ΔE 0.049
- Jet #212529 ΔE 0.051
- Eggplant #380835 ΔE 0.055
- Aubergine #3D0734 ΔE 0.056
- Gunmetal #293241 ΔE 0.060
- Dark Purple #35063E ΔE 0.062
Use #331F37 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.