#311C30
Closest named color: Jet (#212529). oklch(26.3% 0.047 328.5), rgb(49, 28, 48).
Aa
White text reads best on this color (15.67:1).
About this color
#311C30 is a dark, muted purple. In OKLCH its lightness is 26%, its chroma 0.047 and its hue 328°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Jet (#212529), ΔE 0.046 away. White text reads best on it, at 15.67:1.
| Hue family | Purples |
| Lightness | dark (26%) |
| Chroma | muted (0.047) |
| Temperature | in between |
| Nearest name | Jet (#212529) |
| Black text | 1.33:1 |
| White text | 15.67:1 |
Values
| HEX | #311C30 |
| RGB | rgb(49, 28, 48) |
| HSL | hsl(303, 27%, 15%) |
| OKLCH | oklch(26.3% 0.047 328.5) |
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 #311C30 | 15.67:1 | AAA | Lc -105.2 | Preferred for body text |
| Black text on #311C30 | 1.33:1 | Fails | Lc 0.0 | Not readable |
| #311C30 text on white | 15.67:1 | AAA | Lc 102.5 | Preferred for body text |
| #311C30 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
#F0E6EF
oklch(93.5% 0.016 328.8)
-
Step 200
200
#E5D2E3
oklch(88.4% 0.031 329.1)
-
Step 300
300
#D5B4D3
oklch(80.8% 0.056 328)
-
Step 400
400
#BF8DBC
oklch(70.7% 0.088 328.5)
-
Step 500
500
#AF6FAC
oklch(63.1% 0.115 328.5)
-
Step 600
600
#9A5697
oklch(55.6% 0.125 328.7)
-
Step 700
700
#834681
oklch(49% 0.116 328.4)
-
Step 800
800
#6B3A69
oklch(42.7% 0.096 328.6)
-
Step 900
900
#573255
oklch(37.7% 0.075 328.9)
-
Step 950
950 (this color)
#311C30
oklch(26.3% 0.047 328.5)
#311C30 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) | #1B2131 | 0.044 |
| Deuteranopia (no green cones) | #20242F | 0.040 |
| Tritanopia (no blue cones) | #321E23 | 0.028 |
| Achromatopsia (no color) | #232323 | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #311C30
#311C30
oklch(26.3% 0.047 328.5)
- #132B17
#132B17
oklch(26.3% 0.048 147.9)
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 #311C30, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.046
- Dark #1B2431 ΔE 0.046
- Oxford Blue #1B263B ΔE 0.049
- Eggplant #380835 ΔE 0.051
- Aubergine #3D0734 ΔE 0.053
- Space Cadet #2B2D42 ΔE 0.055
- Dark Purple #35063E ΔE 0.061
- Dark Plum #3F012C ΔE 0.062
Use #311C30 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.