#311C51
Closest named color: Dark Purple (#35063E). oklch(28.5% 0.093 298.6), rgb(49, 28, 81).
Aa
White text reads best on this color (14.83:1).
About this color
#311C51 is a dark, moderately saturated purple. In OKLCH its lightness is 28%, its chroma 0.093 and its hue 299°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Purple (#35063E), ΔE 0.056 away. White text reads best on it, at 14.83:1.
| Hue family | Purples |
| Lightness | dark (28%) |
| Chroma | moderately saturated (0.093) |
| Temperature | in between |
| Nearest name | Dark Purple (#35063E) |
| Black text | 1.41:1 |
| White text | 14.83:1 |
Values
| HEX | #311C51 |
| RGB | rgb(49, 28, 81) |
| HSL | hsl(264, 49%, 21%) |
| OKLCH | oklch(28.5% 0.093 298.6) |
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 #311C51 | 14.83:1 | AAA | Lc -104.3 | Preferred for body text |
| Black text on #311C51 | 1.41:1 | Fails | Lc 0.0 | Not readable |
| #311C51 text on white | 14.83:1 | AAA | Lc 101.4 | Preferred for body text |
| #311C51 text on black | 1.41:1 | 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
#F6F3FE
oklch(97% 0.015 298.6)
-
Step 100
100
#ECE6FD
oklch(93.6% 0.031 297.7)
-
Step 200
200
#DED1FD
oklch(88.5% 0.061 298.7)
-
Step 300
300
#CAB1FF
oklch(81% 0.111 298.6)
-
Step 400
400
#B084FE
oklch(70.7% 0.176 298.4)
-
Step 500
500
#9E5DFC
oklch(63% 0.226 298.5)
-
Step 600
600
#8B3AEB
oklch(55.6% 0.246 298.7)
-
Step 700
700
#762ACD
oklch(49.1% 0.228 298.4)
-
Step 800
800
#6026A5
oklch(42.7% 0.188 298.7)
-
Step 900
900
#4E2683
oklch(37.7% 0.148 298.8)
-
Step 950
950 (this color)
#311C51
oklch(28.5% 0.093 298.6)
#311C51 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) | #002853 | 0.069 |
| Deuteranopia (no green cones) | #082750 | 0.064 |
| Tritanopia (no blue cones) | #2A2733 | 0.071 |
| Achromatopsia (no color) | #282828 | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #311C51
#311C51
oklch(28.5% 0.093 298.6)
- #272E00
#272E00
oklch(28.4% 0.066 118.4)
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 #311C51, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Purple #35063E ΔE 0.056
- Dark Indigo #1F0954 ΔE 0.059
- Eggplant Purple #430541 ΔE 0.061
- Space Cadet #2B2D42 ΔE 0.062
- Deep Purple #36013F ΔE 0.062
- Deep Violet #490648 ΔE 0.064
- Eggplant #380835 ΔE 0.065
- Oxford Blue #1B263B ΔE 0.066
Use #311C51 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.