#311B30
Closest named color: Dark (#1B2431). oklch(26.1% 0.049 328.5), rgb(49, 27, 48).
Aa
White text reads best on this color (15.78:1).
About this color
#311B30 is a dark, muted purple. In OKLCH its lightness is 26%, its chroma 0.049 and its hue 328°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark (#1B2431), ΔE 0.048 away. White text reads best on it, at 15.78:1.
| Hue family | Purples |
| Lightness | dark (26%) |
| Chroma | muted (0.049) |
| Temperature | in between |
| Nearest name | Dark (#1B2431) |
| Black text | 1.33:1 |
| White text | 15.78:1 |
Values
| HEX | #311B30 |
| RGB | rgb(49, 27, 48) |
| HSL | hsl(303, 29%, 15%) |
| OKLCH | oklch(26.1% 0.049 328.5) |
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 #311B30 | 15.78:1 | AAA | Lc -105.3 | Preferred for body text |
| Black text on #311B30 | 1.33:1 | Fails | Lc 0.0 | Not readable |
| #311B30 text on white | 15.78:1 | AAA | Lc 102.6 | Preferred for body text |
| #311B30 text on black | 1.33:1 | 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
#F8F4F8
oklch(97.1% 0.007 325.6)
-
Step 100
100
#F0E6F0
oklch(93.6% 0.017 325.7)
-
Step 200
200
#E6D2E4
oklch(88.5% 0.033 329)
-
Step 300
300
#D6B4D4
oklch(80.9% 0.058 328)
-
Step 400
400
#C18CBE
oklch(70.8% 0.093 328.4)
-
Step 500
500
#B06EAD
oklch(63.1% 0.118 328.5)
-
Step 600
600
#9B5599
oklch(55.6% 0.129 328.2)
-
Step 700
700
#854582
oklch(49.2% 0.12 328.9)
-
Step 800
800
#6C396A
oklch(42.8% 0.1 328.6)
-
Step 900
900
#583156
oklch(37.7% 0.079 328.8)
-
Step 950
950 (this color)
#311B30
oklch(26.1% 0.049 328.5)
#311B30 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) | #1A2131 | 0.046 |
| Deuteranopia (no green cones) | #1F242F | 0.044 |
| Tritanopia (no blue cones) | #321D23 | 0.028 |
| Achromatopsia (no color) | #232323 | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #311B30
#311B30
oklch(26.1% 0.049 328.5)
- #112B16
#112B16
oklch(26.2% 0.051 148.3)
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 #311B30, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.048
- Eggplant #380835 ΔE 0.048
- Jet #212529 ΔE 0.049
- Oxford Blue #1B263B ΔE 0.051
- Aubergine #3D0734 ΔE 0.051
- Space Cadet #2B2D42 ΔE 0.058
- Dark Purple #35063E ΔE 0.059
- Dark Plum #3F012C ΔE 0.059
Use #311B30 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.