#331F3B
Closest named color: Space Cadet (#2B2D42). oklch(27.8% 0.056 315.8), rgb(51, 31, 59).
Aa
White text reads best on this color (15.00:1).
About this color
#331F3B is a dark, muted purple. In OKLCH its lightness is 28%, its chroma 0.056 and its hue 316°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Space Cadet (#2B2D42), ΔE 0.044 away. White text reads best on it, at 15.00:1.
| Hue family | Purples |
| Lightness | dark (28%) |
| Chroma | muted (0.056) |
| Temperature | in between |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.39:1 |
| White text | 15.00:1 |
Values
| HEX | #331F3B |
| RGB | rgb(51, 31, 59) |
| HSL | hsl(283, 31%, 18%) |
| OKLCH | oklch(27.8% 0.056 315.8) |
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 #331F3B | 15.00:1 | AAA | Lc -104.6 | Preferred for body text |
| Black text on #331F3B | 1.39:1 | Fails | Lc 0.0 | Not readable |
| #331F3B text on white | 15.00:1 | AAA | Lc 101.8 | Preferred for body text |
| #331F3B 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
#F8F4FA
oklch(97.2% 0.009 314.8)
-
Step 100
100
#EFE6F3
oklch(93.6% 0.02 315.7)
-
Step 200
200
#E3D2EA
oklch(88.5% 0.037 316.2)
-
Step 300
300
#D2B4DE
oklch(80.9% 0.067 316.3)
-
Step 400
400
#BB8CCE
oklch(70.8% 0.107 316)
-
Step 500
500
#A96DC1
oklch(63% 0.137 315.8)
-
Step 600
600
#9454AD
oklch(55.6% 0.148 315.7)
-
Step 700
700
#7E4395
oklch(49% 0.139 315.6)
-
Step 800
800
#673879
oklch(42.8% 0.115 315.9)
-
Step 900
900
#543161
oklch(37.7% 0.089 316.3)
-
Step 950
950 (this color)
#331F3B
oklch(27.8% 0.056 315.8)
#331F3B 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) | #1A253C | 0.047 |
| Deuteranopia (no green cones) | #1F273A | 0.043 |
| Tritanopia (no blue cones) | #33232A | 0.038 |
| Achromatopsia (no color) | #272727 | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #331F3B
#331F3B
oklch(27.8% 0.056 315.8)
- #1B2E11
#1B2E11
oklch(27.6% 0.055 135.9)
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 #331F3B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.044
- Oxford Blue #1B263B ΔE 0.047
- Dark #1B2431 ΔE 0.052
- Eggplant #380835 ΔE 0.054
- Aubergine #3D0734 ΔE 0.055
- Jet #212529 ΔE 0.056
- Dark Purple #35063E ΔE 0.059
- Gunmetal #293241 ΔE 0.060
Use #331F3B 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.