#311B39
Closest named color: Eggplant (#380835). oklch(26.6% 0.061 316.5), rgb(49, 27, 57).
Aa
White text reads best on this color (15.59:1).
About this color
#311B39 is a dark, muted purple. In OKLCH its lightness is 27%, its chroma 0.061 and its hue 317°. 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 15.59:1.
| Hue family | Purples |
| Lightness | dark (27%) |
| Chroma | muted (0.061) |
| Temperature | in between |
| Nearest name | Eggplant (#380835) |
| Black text | 1.34:1 |
| White text | 15.59:1 |
Values
| HEX | #311B39 |
| RGB | rgb(49, 27, 57) |
| HSL | hsl(284, 36%, 16%) |
| OKLCH | oklch(26.6% 0.061 316.5) |
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 #311B39 | 15.59:1 | AAA | Lc -105.1 | Preferred for body text |
| Black text on #311B39 | 1.34:1 | Fails | Lc 0.0 | Not readable |
| #311B39 text on white | 15.59:1 | AAA | Lc 102.4 | Preferred for body text |
| #311B39 text on black | 1.34:1 | 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
#F8F4FA
oklch(97.2% 0.009 314.8)
-
Step 100
100
#F0E6F3
oklch(93.7% 0.02 318.4)
-
Step 200
200
#E4D1EB
oklch(88.4% 0.041 317)
-
Step 300
300
#D4B3E0
oklch(81% 0.072 317)
-
Step 400
400
#BD89D1
oklch(70.6% 0.117 316.3)
-
Step 500
500
#AC6AC4
oklch(63% 0.147 316.5)
-
Step 600
600
#9750B1
oklch(55.6% 0.16 316.2)
-
Step 700
700
#814098
oklch(49.1% 0.149 316.4)
-
Step 800
800
#69357B
oklch(42.7% 0.124 316.7)
-
Step 900
900
#552F63
oklch(37.6% 0.096 316.3)
-
Step 950
950 (this color)
#311B39
oklch(26.6% 0.061 316.5)
#311B39 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) | #16223A | 0.052 |
| Deuteranopia (no green cones) | #1C2438 | 0.047 |
| Tritanopia (no blue cones) | #311F27 | 0.040 |
| Achromatopsia (no color) | #242424 | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #311B39
#311B39
oklch(26.6% 0.061 316.5)
- #162C0C
#162C0C
oklch(26.6% 0.061 137.1)
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 #311B39, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Eggplant #380835 ΔE 0.044
- Aubergine #3D0734 ΔE 0.048
- Dark Purple #35063E ΔE 0.049
- Oxford Blue #1B263B ΔE 0.050
- Dark #1B2431 ΔE 0.053
- Space Cadet #2B2D42 ΔE 0.055
- Deep Purple #36013F ΔE 0.058
- Eggplant Purple #430541 ΔE 0.058
Use #311B39 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.