#021F1E
Closest named color: Rich Black (#0D1B2A). oklch(21.7% 0.035 191.7), rgb(2, 31, 30).
Aa
White text reads best on this color (17.25:1).
About this color
#021F1E is a very dark, muted teal or cyan. In OKLCH its lightness is 22%, its chroma 0.035 and its hue 192°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.035 away. White text reads best on it, at 17.25:1.
| Hue family | Teals and cyans |
| Lightness | very dark (22%) |
| Chroma | muted (0.035) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.21:1 |
| White text | 17.25:1 |
Values
| HEX | #021F1E |
| RGB | rgb(2, 31, 30) |
| HSL | hsl(178, 88%, 6%) |
| OKLCH | oklch(21.7% 0.035 191.7) |
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 #021F1E | 17.25:1 | AAA | Lc -106.3 | Preferred for body text |
| Black text on #021F1E | 1.21:1 | Fails | Lc 0.0 | Not readable |
| #021F1E text on white | 17.25:1 | AAA | Lc 104.0 | Preferred for body text |
| #021F1E text on black | 1.21:1 | 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
#F1F7F6
oklch(97.1% 0.006 185.3)
-
Step 100
100
#E1EDEC
oklch(93.7% 0.013 190.9)
-
Step 200
200
#C9DEDD
oklch(88.5% 0.022 193.3)
-
Step 300
300
#A3CAC7
oklch(81% 0.042 190.6)
-
Step 400
400
#6EAEAB
oklch(70.7% 0.066 192)
-
Step 500
500
#419A96
oklch(63.2% 0.085 191.2)
-
Step 600
600
#128481
oklch(55.6% 0.092 191.9)
-
Step 700
700
#00706D
oklch(49.2% 0.085 191.5)
-
Step 800
800
#085B59
oklch(42.7% 0.071 192.2)
-
Step 900
900
#154B49
oklch(37.8% 0.055 191.5)
-
Step 950
950 (this color)
#021F1E
oklch(21.7% 0.035 191.7)
#021F1E 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) | #1C1D1E | 0.036 |
| Deuteranopia (no green cones) | #18191E | 0.036 |
| Tritanopia (no blue cones) | #00201F | 0.004 |
| Achromatopsia (no color) | #1B1B1B | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #021F1E
#021F1E
oklch(21.7% 0.035 191.7)
- #281316
#281316
oklch(21.8% 0.035 11.2)
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 #021F1E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.035
- Rich Navy #001219 ΔE 0.052
- Dark #1B2431 ΔE 0.053
- Jet #212529 ΔE 0.054
- Oxford Blue #1B263B ΔE 0.069
- Almost Black #070D0D ΔE 0.070
- Dark Forest Green #002D04 ΔE 0.077
- Very Dark Green #062E03 ΔE 0.080
Use #021F1E 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.