#331D40
Closest named color: Eggplant (#380835). oklch(27.7% 0.068 311.7), rgb(51, 29, 64).
Aa
White text reads best on this color (15.10:1).
About this color
#331D40 is a dark, muted purple. In OKLCH its lightness is 28%, its chroma 0.068 and its hue 312°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Eggplant (#380835), ΔE 0.049 away. White text reads best on it, at 15.10:1.
| Hue family | Purples |
| Lightness | dark (28%) |
| Chroma | muted (0.068) |
| Temperature | in between |
| Nearest name | Eggplant (#380835) |
| Black text | 1.39:1 |
| White text | 15.10:1 |
Values
| HEX | #331D40 |
| RGB | rgb(51, 29, 64) |
| HSL | hsl(278, 38%, 18%) |
| OKLCH | oklch(27.7% 0.068 311.7) |
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 #331D40 | 15.10:1 | AAA | Lc -104.6 | Preferred for body text |
| Black text on #331D40 | 1.39:1 | Fails | Lc 0.0 | Not readable |
| #331D40 text on white | 15.10:1 | AAA | Lc 101.8 | Preferred for body text |
| #331D40 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
#F8F3FB
oklch(97% 0.012 313.2)
-
Step 100
100
#EFE6F5
oklch(93.6% 0.022 312.2)
-
Step 200
200
#E3D1EF
oklch(88.4% 0.045 312)
-
Step 300
300
#D2B2E7
oklch(80.9% 0.081 311.8)
-
Step 400
400
#BB88DB
oklch(70.7% 0.129 311.6)
-
Step 500
500
#AA68D0
oklch(63.1% 0.163 311.9)
-
Step 600
600
#954CBD
oklch(55.5% 0.178 311.8)
-
Step 700
700
#7F3CA3
oklch(49% 0.166 311.8)
-
Step 800
800
#673384
oklch(42.7% 0.136 311.6)
-
Step 900
900
#542E6A
oklch(37.8% 0.106 311.6)
-
Step 950
950 (this color)
#331D40
oklch(27.7% 0.068 311.7)
#331D40 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) | #152541 | 0.055 |
| Deuteranopia (no green cones) | #1B273F | 0.051 |
| Tritanopia (no blue cones) | #32232B | 0.048 |
| Achromatopsia (no color) | #262626 | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #331D40
#331D40
oklch(27.7% 0.068 311.7)
- #1B2F06
#1B2F06
oklch(27.8% 0.069 132.1)
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 #331D40, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Eggplant #380835 ΔE 0.049
- Space Cadet #2B2D42 ΔE 0.050
- Dark Purple #35063E ΔE 0.051
- Oxford Blue #1B263B ΔE 0.052
- Aubergine #3D0734 ΔE 0.052
- Eggplant Purple #430541 ΔE 0.056
- Deep Purple #36013F ΔE 0.059
- Dark #1B2431 ΔE 0.059
Use #331D40 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.