#021B1F
Closest named color: Rich Black (#0D1B2A). oklch(20.4% 0.033 209.1), rgb(2, 27, 31).
Aa
White text reads best on this color (17.80:1).
About this color
#021B1F is a very dark, muted teal or cyan. In OKLCH its lightness is 20%, its chroma 0.033 and its hue 209°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.028 away. White text reads best on it, at 17.80:1.
| Hue family | Teals and cyans |
| Lightness | very dark (20%) |
| Chroma | muted (0.033) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.17:1 |
| White text | 17.80:1 |
Values
| HEX | #021B1F |
| RGB | rgb(2, 27, 31) |
| HSL | hsl(188, 88%, 6%) |
| OKLCH | oklch(20.4% 0.033 209.1) |
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 #021B1F | 17.80:1 | AAA | Lc -106.7 | Preferred for body text |
| Black text on #021B1F | 1.17:1 | Fails | Lc 0.0 | Not readable |
| #021B1F text on white | 17.80:1 | AAA | Lc 104.4 | Preferred for body text |
| #021B1F text on black | 1.17:1 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECEE
oklch(93.6% 0.011 211)
-
Step 200
200
#CADDE1
oklch(88.5% 0.021 211.8)
-
Step 300
300
#A5C8CE
oklch(80.9% 0.038 209.1)
-
Step 400
400
#72ACB5
oklch(70.8% 0.062 208.1)
-
Step 500
500
#4897A3
oklch(63.2% 0.079 208.5)
-
Step 600
600
#23818E
oklch(55.6% 0.086 208.6)
-
Step 700
700
#136D79
oklch(49.2% 0.08 208.9)
-
Step 800
800
#155962
oklch(42.8% 0.066 208.1)
-
Step 900
900
#1A4950
oklch(37.7% 0.052 208.7)
-
Step 950
950 (this color)
#021B1F
oklch(20.4% 0.033 209.1)
#021B1F 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) | #171A1F | 0.030 |
| Deuteranopia (no green cones) | #13161F | 0.029 |
| Tritanopia (no blue cones) | #001D1C | 0.012 |
| Achromatopsia (no color) | #181818 | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #021B1F
#021B1F
oklch(20.4% 0.033 209.1)
- #24110E
#24110E
oklch(20.4% 0.033 29.8)
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 #021B1F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.028
- Rich Navy #001219 ΔE 0.036
- Almost Black #070D0D ΔE 0.057
- Dark #1B2431 ΔE 0.059
- Jet #212529 ΔE 0.063
- Oxford Blue #1B263B ΔE 0.073
- Navy Blue #001146 ΔE 0.087
- Dark Forest Green #002D04 ΔE 0.092
Use #021B1F 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.