#331F51
Closest named color: Space Cadet (#2B2D42). oklch(29.3% 0.088 299.3), rgb(51, 31, 81).
Aa
White text reads best on this color (14.42:1).
About this color
#331F51 is a dark, moderately saturated purple. In OKLCH its lightness is 29%, its chroma 0.088 and its hue 299°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Space Cadet (#2B2D42), ΔE 0.056 away. White text reads best on it, at 14.42:1.
| Hue family | Purples |
| Lightness | dark (29%) |
| Chroma | moderately saturated (0.088) |
| Temperature | in between |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.45:1 |
| White text | 14.42:1 |
Values
| HEX | #331F51 |
| RGB | rgb(51, 31, 81) |
| HSL | hsl(264, 45%, 22%) |
| OKLCH | oklch(29.3% 0.088 299.3) |
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 #331F51 | 14.42:1 | AAA | Lc -103.9 | Preferred for body text |
| Black text on #331F51 | 1.45:1 | Fails | Lc 0.0 | Not readable |
| #331F51 text on white | 14.42:1 | AAA | Lc 101.0 | Preferred for body text |
| #331F51 text on black | 1.45:1 | 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
#F7F4FE
oklch(97.2% 0.014 299.8)
-
Step 100
100
#ECE6FC
oklch(93.6% 0.03 298.3)
-
Step 200
200
#DED1FB
oklch(88.4% 0.059 299.3)
-
Step 300
300
#CAB2FB
oklch(81% 0.104 299.2)
-
Step 400
400
#B085F9
oklch(70.6% 0.168 299.2)
-
Step 500
500
#9F61F6
oklch(63.2% 0.214 299.4)
-
Step 600
600
#8B40E4
oklch(55.6% 0.232 299.5)
-
Step 700
700
#762FC6
oklch(49% 0.217 299.5)
-
Step 800
800
#602AA0
oklch(42.7% 0.179 299.6)
-
Step 900
900
#4E297F
oklch(37.8% 0.139 299.4)
-
Step 950
950 (this color)
#331F51
oklch(29.3% 0.088 299.3)
#331F51 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) | #092A53 | 0.064 |
| Deuteranopia (no green cones) | #102950 | 0.059 |
| Tritanopia (no blue cones) | #2D2934 | 0.068 |
| Achromatopsia (no color) | #2A2A2A | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #331F51
#331F51
oklch(29.3% 0.088 299.3)
- #283000
#283000
oklch(29.1% 0.069 119.2)
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 #331F51, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.056
- Dark Purple #35063E ΔE 0.062
- Eggplant Purple #430541 ΔE 0.063
- Deep Violet #490648 ΔE 0.064
- Oxford Blue #1B263B ΔE 0.065
- Dark Indigo #1F0954 ΔE 0.068
- Deep Purple #36013F ΔE 0.068
- Eggplant #380835 ΔE 0.069
Use #331F51 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.