#201B37
Closest named color: Oxford Blue (#1B263B). oklch(24.3% 0.052 290.1), rgb(32, 27, 55).
Aa
White text reads best on this color (16.49:1).
About this color
#201B37 is a very dark, muted purple. In OKLCH its lightness is 24%, its chroma 0.052 and its hue 290°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.036 away. White text reads best on it, at 16.49:1.
| Hue family | Purples |
| Lightness | very dark (24%) |
| Chroma | muted (0.052) |
| Temperature | in between |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.27:1 |
| White text | 16.49:1 |
Values
| HEX | #201B37 |
| RGB | rgb(32, 27, 55) |
| HSL | hsl(251, 34%, 16%) |
| OKLCH | oklch(24.3% 0.052 290.1) |
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 #201B37 | 16.49:1 | AAA | Lc -105.9 | Preferred for body text |
| Black text on #201B37 | 1.27:1 | Fails | Lc 0.0 | Not readable |
| #201B37 text on white | 16.49:1 | AAA | Lc 103.4 | Preferred for body text |
| #201B37 text on black | 1.27:1 | 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
#F5F5FB
oklch(97.2% 0.008 286.3)
-
Step 100
100
#E9E8F5
oklch(93.6% 0.017 289.6)
-
Step 200
200
#D8D6EF
oklch(88.5% 0.034 289.4)
-
Step 300
300
#BFBAE7
oklch(80.8% 0.063 290)
-
Step 400
400
#A096DA
oklch(70.7% 0.099 290.4)
-
Step 500
500
#897BD0
oklch(63.2% 0.126 289.9)
-
Step 600
600
#7462BD
oklch(55.6% 0.137 290.3)
-
Step 700
700
#6151A3
oklch(49.1% 0.127 289.9)
-
Step 800
800
#4F4284
oklch(42.6% 0.107 290.2)
-
Step 900
900
#42396A
oklch(37.8% 0.082 290.4)
-
Step 950
950 (this color)
#201B37
oklch(24.3% 0.052 290.1)
#201B37 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) | #121F38 | 0.025 |
| Deuteranopia (no green cones) | #121E36 | 0.025 |
| Tritanopia (no blue cones) | #1A2026 | 0.043 |
| Achromatopsia (no color) | #1F1F1F | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #201B37
#201B37
oklch(24.3% 0.052 290.1)
- #222201
#222201
oklch(24.4% 0.052 109.7)
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 #201B37, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.036
- Dark #1B2431 ΔE 0.036
- Rich Black #0D1B2A ΔE 0.042
- Jet #212529 ΔE 0.049
- Space Cadet #2B2D42 ΔE 0.064
- Eggplant #380835 ΔE 0.065
- Dark Purple #35063E ΔE 0.065
- Midnight Purple #280137 ΔE 0.066
Use #201B37 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.