#00201B
Closest named color: Rich Black (#0D1B2A). oklch(21.8% 0.039 180.5), rgb(0, 32, 27).
Aa
White text reads best on this color (17.17:1).
About this color
#00201B is a very dark, muted teal or cyan. In OKLCH its lightness is 22%, its chroma 0.039 and its hue 180°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.044 away. White text reads best on it, at 17.17:1.
| Hue family | Teals and cyans |
| Lightness | very dark (22%) |
| Chroma | muted (0.039) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.22:1 |
| White text | 17.17:1 |
Values
| HEX | #00201B |
| RGB | rgb(0, 32, 27) |
| HSL | hsl(171, 100%, 6%) |
| OKLCH | oklch(21.8% 0.039 180.5) |
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 #00201B | 17.17:1 | AAA | Lc -106.2 | Preferred for body text |
| Black text on #00201B | 1.22:1 | Fails | Lc 0.0 | Not readable |
| #00201B text on white | 17.17:1 | AAA | Lc 103.9 | Preferred for body text |
| #00201B text on black | 1.22:1 | 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
#F1F7F5
oklch(97.1% 0.007 174.4)
-
Step 100
100
#E1EDEA
oklch(93.6% 0.013 179.5)
-
Step 200
200
#C8DFDA
oklch(88.5% 0.025 181.2)
-
Step 300
300
#A0CBC2
oklch(80.9% 0.047 180.9)
-
Step 400
400
#69B0A3
oklch(70.7% 0.075 181)
-
Step 500
500
#389C8C
oklch(63% 0.095 180.6)
-
Step 600
600
#008676
oklch(55.6% 0.1 180.5)
-
Step 700
700
#007163
oklch(49.2% 0.089 180.3)
-
Step 800
800
#005C51
oklch(42.6% 0.077 181.1)
-
Step 900
900
#0E4C43
oklch(37.6% 0.062 180.7)
-
Step 950
950 (this color)
#00201B
oklch(21.8% 0.039 180.5)
#00201B 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) | #1E1D1B | 0.042 |
| Deuteranopia (no green cones) | #191A1B | 0.039 |
| Tritanopia (no blue cones) | #00211E | 0.006 |
| Achromatopsia (no color) | #1B1B1B | 0.040 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00201B
#00201B
oklch(21.8% 0.039 180.5)
- #291219
#291219
oklch(21.9% 0.039 1.4)
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 #00201B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.044
- Rich Navy #001219 ΔE 0.056
- Jet #212529 ΔE 0.057
- Dark #1B2431 ΔE 0.058
- Dark Forest Green #002D04 ΔE 0.069
- Almost Black #070D0D ΔE 0.072
- Very Dark Green #062E03 ΔE 0.073
- Oxford Blue #1B263B ΔE 0.074
Use #00201B 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.