#231B2A
Closest named color: Dark (#1B2431). oklch(23.9% 0.03 308.5), rgb(35, 27, 42).
Aa
White text reads best on this color (16.64:1).
About this color
#231B2A is a very dark, muted purple. In OKLCH its lightness is 24%, its chroma 0.030 and its hue 309°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark (#1B2431), ΔE 0.032 away. White text reads best on it, at 16.64:1.
| Hue family | Purples |
| Lightness | very dark (24%) |
| Chroma | muted (0.030) |
| Temperature | in between |
| Nearest name | Dark (#1B2431) |
| Black text | 1.26:1 |
| White text | 16.64:1 |
Values
| HEX | #231B2A |
| RGB | rgb(35, 27, 42) |
| HSL | hsl(272, 22%, 14%) |
| OKLCH | oklch(23.9% 0.03 308.5) |
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 #231B2A | 16.64:1 | AAA | Lc -106.0 | Preferred for body text |
| Black text on #231B2A | 1.26:1 | Fails | Lc 0.0 | Not readable |
| #231B2A text on white | 16.64:1 | AAA | Lc 103.6 | Preferred for body text |
| #231B2A text on black | 1.26:1 | 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
#F6F5F8
oklch(97.2% 0.004 301.4)
-
Step 100
100
#ECE8EF
oklch(93.6% 0.01 311.2)
-
Step 200
200
#DDD6E3
oklch(88.5% 0.019 309.8)
-
Step 300
300
#C7BBD3
oklch(80.9% 0.036 308)
-
Step 400
400
#AB97BD
oklch(70.7% 0.059 308.7)
-
Step 500
500
#967EAC
oklch(63.2% 0.073 308.1)
-
Step 600
600
#816697
oklch(55.6% 0.08 309.1)
-
Step 700
700
#6D5581
oklch(49.1% 0.074 308.8)
-
Step 800
800
#594669
oklch(42.8% 0.061 308.8)
-
Step 900
900
#493B55
oklch(37.8% 0.047 308.8)
-
Step 950
950 (this color)
#231B2A
oklch(23.9% 0.03 308.5)
#231B2A 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) | #181E2B | 0.022 |
| Deuteranopia (no green cones) | #1A1E2A | 0.019 |
| Tritanopia (no blue cones) | #221D20 | 0.023 |
| Achromatopsia (no color) | #1E1E1E | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #231B2A
#231B2A
oklch(23.9% 0.03 308.5)
- #1B2212
#1B2212
oklch(24% 0.031 127.8)
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 #231B2A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.032
- Jet #212529 ΔE 0.036
- Rich Black #0D1B2A ΔE 0.038
- Oxford Blue #1B263B ΔE 0.043
- Eggplant #380835 ΔE 0.068
- Space Cadet #2B2D42 ΔE 0.069
- Dark Brown #341C02 ΔE 0.074
- Very Dark Purple #2A0134 ΔE 0.075
Use #231B2A 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.