#201721
Closest named color: Rich Black (#0D1B2A). oklch(22% 0.023 323), rgb(32, 23, 33).
Aa
White text reads best on this color (17.41:1).
About this color
#201721 is a very dark close to neutral grey. In OKLCH its lightness is 22%, its chroma 0.023. It has too little chroma to lean warm or cool. The nearest named color is Rich Black (#0D1B2A), ΔE 0.036 away. White text reads best on it, at 17.41:1.
| Hue family | Neutrals |
| Lightness | very dark (22%) |
| Chroma | close to neutral grey (0.023) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.20:1 |
| White text | 17.41:1 |
Values
| HEX | #201721 |
| RGB | rgb(32, 23, 33) |
| HSL | hsl(294, 18%, 11%) |
| OKLCH | oklch(22% 0.023 323) |
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 #201721 | 17.41:1 | AAA | Lc -106.5 | Preferred for body text |
| Black text on #201721 | 1.20:1 | Fails | Lc 0.0 | Not readable |
| #201721 text on white | 17.41:1 | AAA | Lc 104.3 | Preferred for body text |
| #201721 text on black | 1.20:1 | 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
#F7F5F7
oklch(97.2% 0.003 325.6)
-
Step 100
100
#ECE8ED
oklch(93.6% 0.008 319.4)
-
Step 200
200
#DED6DF
oklch(88.5% 0.015 322.3)
-
Step 300
300
#CABBCB
oklch(80.9% 0.028 323.9)
-
Step 400
400
#AF98B1
oklch(70.8% 0.044 323.5)
-
Step 500
500
#9B7E9E
oklch(63.1% 0.058 323.2)
-
Step 600
600
#856788
oklch(55.5% 0.062 323.4)
-
Step 700
700
#715674
oklch(49.2% 0.057 323.1)
-
Step 800
800
#5C465E
oklch(42.7% 0.048 323.6)
-
Step 900
900
#4B3B4D
oklch(37.6% 0.037 322.6)
-
Step 950
950 (this color)
#201721
oklch(22% 0.023 323)
#201721 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) | #161921 | 0.020 |
| Deuteranopia (no green cones) | #181A21 | 0.018 |
| Tritanopia (no blue cones) | #20181A | 0.015 |
| Achromatopsia (no color) | #1A1A1A | 0.024 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #201721
#201721
oklch(22% 0.023 323)
- #141E14
#141E14
oklch(22.2% 0.024 144.7)
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 #201721, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.036
- Dark #1B2431 ΔE 0.047
- Jet #212529 ΔE 0.048
- Oxford Blue #1B263B ΔE 0.061
- Rich Navy #001219 ΔE 0.066
- Dark Brown #341C02 ΔE 0.071
- Almost Black #070D0D ΔE 0.074
- Very Dark Purple #2A0134 ΔE 0.076
Use #201721 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.