#311B3B
Closest named color: Eggplant (#380835). oklch(26.7% 0.064 314.5), rgb(49, 27, 59).
Aa
White text reads best on this color (15.54:1).
About this color
#311B3B is a dark, muted purple. In OKLCH its lightness is 27%, its chroma 0.064 and its hue 314°. 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 15.54:1.
| Hue family | Purples |
| Lightness | dark (27%) |
| Chroma | muted (0.064) |
| Temperature | in between |
| Nearest name | Eggplant (#380835) |
| Black text | 1.35:1 |
| White text | 15.54:1 |
Values
| HEX | #311B3B |
| RGB | rgb(49, 27, 59) |
| HSL | hsl(281, 37%, 17%) |
| OKLCH | oklch(26.7% 0.064 314.5) |
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 #311B3B | 15.54:1 | AAA | Lc -105.0 | Preferred for body text |
| Black text on #311B3B | 1.35:1 | Fails | Lc 0.0 | Not readable |
| #311B3B text on white | 15.54:1 | AAA | Lc 102.3 | Preferred for body text |
| #311B3B text on black | 1.35:1 | 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
#EFE6F4
oklch(93.6% 0.021 313.8)
-
Step 200
200
#E4D1ED
oklch(88.5% 0.043 315)
-
Step 300
300
#D3B2E3
oklch(80.8% 0.076 314.6)
-
Step 400
400
#BC89D5
oklch(70.7% 0.121 314.1)
-
Step 500
500
#AB69C9
oklch(63% 0.154 314.4)
-
Step 600
600
#974EB6
oklch(55.6% 0.168 314.7)
-
Step 700
700
#803E9D
oklch(49% 0.157 314.2)
-
Step 800
800
#68347F
oklch(42.6% 0.129 314.3)
-
Step 900
900
#552E66
oklch(37.6% 0.101 314.7)
-
Step 950
950 (this color)
#311B3B
oklch(26.7% 0.064 314.5)
#311B3B 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) | #15233C | 0.054 |
| Deuteranopia (no green cones) | #1B243A | 0.048 |
| Tritanopia (no blue cones) | #302028 | 0.043 |
| Achromatopsia (no color) | #242424 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #311B3B
#311B3B
oklch(26.7% 0.064 314.5)
- #182C09
#182C09
oklch(26.7% 0.063 134.2)
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 #311B3B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Eggplant #380835 ΔE 0.044
- Dark Purple #35063E ΔE 0.047
- Aubergine #3D0734 ΔE 0.048
- Oxford Blue #1B263B ΔE 0.050
- Space Cadet #2B2D42 ΔE 0.054
- Dark #1B2431 ΔE 0.055
- Deep Purple #36013F ΔE 0.056
- Eggplant Purple #430541 ΔE 0.057
Use #311B3B 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.