#331A58
Closest named color: Dark Indigo (#1F0954). oklch(29% 0.106 297.9), rgb(51, 26, 88).
Aa
White text reads best on this color (14.69:1).
About this color
#331A58 is a dark, moderately saturated purple. In OKLCH its lightness is 29%, its chroma 0.106 and its hue 298°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Indigo (#1F0954), ΔE 0.058 away. White text reads best on it, at 14.69:1.
| Hue family | Purples |
| Lightness | dark (29%) |
| Chroma | moderately saturated (0.106) |
| Temperature | in between |
| Nearest name | Dark Indigo (#1F0954) |
| Black text | 1.42:1 |
| White text | 14.69:1 |
Values
| HEX | #331A58 |
| RGB | rgb(51, 26, 88) |
| HSL | hsl(264, 54%, 22%) |
| OKLCH | oklch(29% 0.106 297.9) |
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 #331A58 | 14.69:1 | AAA | Lc -104.1 | Preferred for body text |
| Black text on #331A58 | 1.42:1 | Fails | Lc 0.0 | Not readable |
| #331A58 text on white | 14.69:1 | AAA | Lc 101.2 | Preferred for body text |
| #331A58 text on black | 1.42:1 | 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
#F6F3FF
oklch(97% 0.016 297.5)
-
Step 100
100
#ECE5FF
oklch(93.5% 0.036 298)
-
Step 200
200
#DED1FF
oklch(88.6% 0.064 298)
-
Step 300
300
#C9B1FF
oklch(80.9% 0.111 298)
-
Step 400
400
#AF84FF
oklch(70.7% 0.177 297.9)
-
Step 500
500
#9E5CFF
oklch(63.1% 0.231 298.1)
-
Step 600
600
#8E23FC
oklch(55.6% 0.28 298.1)
-
Step 700
700
#790ADC
oklch(49.1% 0.26 298)
-
Step 800
800
#6215B2
oklch(42.7% 0.216 297.8)
-
Step 900
900
#4F1E8D
oklch(37.7% 0.169 297.6)
-
Step 950
950 (this color)
#331A58
oklch(29% 0.106 297.9)
#331A58 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) | #00285A | 0.073 |
| Deuteranopia (no green cones) | #002857 | 0.074 |
| Tritanopia (no blue cones) | #2A2836 | 0.081 |
| Achromatopsia (no color) | #282828 | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #331A58
#331A58
oklch(29% 0.106 297.9)
- #292F00
#292F00
oklch(28.9% 0.067 117.1)
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 #331A58, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Indigo #1F0954 ΔE 0.058
- Dark Purple #35063E ΔE 0.061
- Deep Violet #490648 ΔE 0.063
- Eggplant Purple #430541 ΔE 0.064
- Deep Purple #36013F ΔE 0.065
- Midnight Blue #191970 ΔE 0.065
- Plum Purple #4E0550 ΔE 0.067
- Royal Purple #4B006E ΔE 0.068
Use #331A58 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.