#31213B
Closest named color: Space Cadet (#2B2D42). oklch(27.9% 0.051 311.6), rgb(49, 33, 59).
Aa
White text reads best on this color (14.88:1).
About this color
#31213B is a dark, muted purple. In OKLCH its lightness is 28%, its chroma 0.051 and its hue 312°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Space Cadet (#2B2D42), ΔE 0.038 away. White text reads best on it, at 14.88:1.
| Hue family | Purples |
| Lightness | dark (28%) |
| Chroma | muted (0.051) |
| Temperature | in between |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.41:1 |
| White text | 14.88:1 |
Values
| HEX | #31213B |
| RGB | rgb(49, 33, 59) |
| HSL | hsl(277, 28%, 18%) |
| OKLCH | oklch(27.9% 0.051 311.6) |
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 #31213B | 14.88:1 | AAA | Lc -104.5 | Preferred for body text |
| Black text on #31213B | 1.41:1 | Fails | Lc 0.0 | Not readable |
| #31213B text on white | 14.88:1 | AAA | Lc 101.7 | Preferred for body text |
| #31213B 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
#F7F4F9
oklch(97.1% 0.007 312.3)
-
Step 100
100
#EEE7F3
oklch(93.7% 0.018 311.6)
-
Step 200
200
#E0D3EA
oklch(88.4% 0.034 310.7)
-
Step 300
300
#CEB6DE
oklch(80.9% 0.061 311.8)
-
Step 400
400
#B58FCD
oklch(70.7% 0.097 311.9)
-
Step 500
500
#A272C0
oklch(63.1% 0.124 311.5)
-
Step 600
600
#8D59AC
oklch(55.6% 0.135 311.6)
-
Step 700
700
#784994
oklch(49.2% 0.125 311.5)
-
Step 800
800
#613C78
oklch(42.6% 0.104 311.2)
-
Step 900
900
#503460
oklch(37.7% 0.08 312.3)
-
Step 950
950 (this color)
#31213B
oklch(27.9% 0.051 311.6)
#31213B 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) | #1C263C | 0.039 |
| Deuteranopia (no green cones) | #20283A | 0.037 |
| Tritanopia (no blue cones) | #30252B | 0.036 |
| Achromatopsia (no color) | #272727 | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31213B
#31213B
oklch(27.9% 0.051 311.6)
- #1F2E12
#1F2E12
oklch(28% 0.051 132.1)
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 #31213B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.038
- Oxford Blue #1B263B ΔE 0.041
- Dark #1B2431 ΔE 0.047
- Jet #212529 ΔE 0.051
- Gunmetal #293241 ΔE 0.054
- Eggplant #380835 ΔE 0.060
- Aubergine #3D0734 ΔE 0.062
- Dark Purple #35063E ΔE 0.065
Use #31213B 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.