#331B40
Closest named color: Eggplant (#380835). oklch(27.3% 0.072 312.5), rgb(51, 27, 64).
Aa
White text reads best on this color (15.31:1).
About this color
#331B40 is a dark, moderately saturated purple. In OKLCH its lightness is 27%, its chroma 0.072 and its hue 312°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Eggplant (#380835), ΔE 0.044 away. White text reads best on it, at 15.31:1.
| Hue family | Purples |
| Lightness | dark (27%) |
| Chroma | moderately saturated (0.072) |
| Temperature | in between |
| Nearest name | Eggplant (#380835) |
| Black text | 1.37:1 |
| White text | 15.31:1 |
Values
| HEX | #331B40 |
| RGB | rgb(51, 27, 64) |
| HSL | hsl(279, 41%, 18%) |
| OKLCH | oklch(27.3% 0.072 312.5) |
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 #331B40 | 15.31:1 | AAA | Lc -104.8 | Preferred for body text |
| Black text on #331B40 | 1.37:1 | Fails | Lc 0.0 | Not readable |
| #331B40 text on white | 15.31:1 | AAA | Lc 102.1 | Preferred for body text |
| #331B40 text on black | 1.37:1 | 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
#F0E5F6
oklch(93.6% 0.025 314)
-
Step 200
200
#E4D1F0
oklch(88.6% 0.047 312.5)
-
Step 300
300
#D4B1E9
oklch(80.9% 0.086 312.6)
-
Step 400
400
#BD86DD
oklch(70.6% 0.136 312.3)
-
Step 500
500
#AD64D3
oklch(63% 0.174 312.8)
-
Step 600
600
#9848C1
oklch(55.6% 0.189 312.3)
-
Step 700
700
#8238A6
oklch(49.1% 0.176 312.7)
-
Step 800
800
#693087
oklch(42.7% 0.145 312)
-
Step 900
900
#562C6C
oklch(37.8% 0.113 312.5)
-
Step 950
950 (this color)
#331B40
oklch(27.3% 0.072 312.5)
#331B40 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) | #122441 | 0.061 |
| Deuteranopia (no green cones) | #19263F | 0.055 |
| Tritanopia (no blue cones) | #32212A | 0.050 |
| Achromatopsia (no color) | #252525 | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #331B40
#331B40
oklch(27.3% 0.072 312.5)
- #192E03
#192E03
oklch(27.3% 0.072 132.3)
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 #331B40, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Eggplant #380835 ΔE 0.044
- Dark Purple #35063E ΔE 0.045
- Aubergine #3D0734 ΔE 0.048
- Eggplant Purple #430541 ΔE 0.052
- Deep Purple #36013F ΔE 0.054
- Space Cadet #2B2D42 ΔE 0.055
- Oxford Blue #1B263B ΔE 0.055
- Deep Violet #490648 ΔE 0.060
Use #331B40 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.