#331B44
Closest named color: Dark Purple (#35063E). oklch(27.6% 0.077 309.2), rgb(51, 27, 68).
Aa
White text reads best on this color (15.20:1).
About this color
#331B44 is a dark, moderately saturated purple. In OKLCH its lightness is 28%, its chroma 0.077 and its hue 309°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Purple (#35063E), ΔE 0.045 away. White text reads best on it, at 15.20:1.
| Hue family | Purples |
| Lightness | dark (28%) |
| Chroma | moderately saturated (0.077) |
| Temperature | in between |
| Nearest name | Dark Purple (#35063E) |
| Black text | 1.38:1 |
| White text | 15.20:1 |
Values
| HEX | #331B44 |
| RGB | rgb(51, 27, 68) |
| HSL | hsl(275, 43%, 19%) |
| OKLCH | oklch(27.6% 0.077 309.2) |
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 #331B44 | 15.20:1 | AAA | Lc -104.7 | Preferred for body text |
| Black text on #331B44 | 1.38:1 | Fails | Lc 0.0 | Not readable |
| #331B44 text on white | 15.20:1 | AAA | Lc 101.9 | Preferred for body text |
| #331B44 text on black | 1.38:1 | 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
#F8F3FC
oklch(97.1% 0.013 310.5)
-
Step 100
100
#EFE5F8
oklch(93.5% 0.027 309.2)
-
Step 200
200
#E3D1F3
oklch(88.6% 0.05 309.1)
-
Step 300
300
#D2B1EE
oklch(81% 0.091 309)
-
Step 400
400
#BC85E5
oklch(70.8% 0.147 309.5)
-
Step 500
500
#AB62DD
oklch(63.1% 0.187 309.4)
-
Step 600
600
#9644CB
oklch(55.5% 0.204 309.1)
-
Step 700
700
#8035AF
oklch(49.1% 0.188 309.2)
-
Step 800
800
#682D8E
oklch(42.7% 0.157 309.2)
-
Step 900
900
#552A71
oklch(37.7% 0.122 309.7)
-
Step 950
950 (this color)
#331B44
oklch(27.6% 0.077 309.2)
#331B44 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) | #0F2545 | 0.064 |
| Deuteranopia (no green cones) | #172643 | 0.057 |
| Tritanopia (no blue cones) | #31222C | 0.055 |
| Achromatopsia (no color) | #262626 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #331B44
#331B44
oklch(27.6% 0.077 309.2)
- #1C2E00
#1C2E00
oklch(27.5% 0.073 129.1)
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 #331B44, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Purple #35063E ΔE 0.045
- Eggplant #380835 ΔE 0.047
- Aubergine #3D0734 ΔE 0.051
- Eggplant Purple #430541 ΔE 0.051
- Deep Purple #36013F ΔE 0.053
- Space Cadet #2B2D42 ΔE 0.056
- Oxford Blue #1B263B ΔE 0.058
- Deep Violet #490648 ΔE 0.058
Use #331B44 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.