#03211B
Closest named color: Rich Black (#0D1B2A). oklch(22.3% 0.038 177.1), rgb(3, 33, 27).
Aa
White text reads best on this color (16.97:1).
About this color
#03211B is a very dark, muted teal or cyan. In OKLCH its lightness is 22%, its chroma 0.038 and its hue 177°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.045 away. White text reads best on it, at 16.97:1.
| Hue family | Teals and cyans |
| Lightness | very dark (22%) |
| Chroma | muted (0.038) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.23:1 |
| White text | 16.97:1 |
Values
| HEX | #03211B |
| RGB | rgb(3, 33, 27) |
| HSL | hsl(168, 83%, 7%) |
| OKLCH | oklch(22.3% 0.038 177.1) |
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 #03211B | 16.97:1 | AAA | Lc -106.1 | Preferred for body text |
| Black text on #03211B | 1.23:1 | Fails | Lc 0.0 | Not readable |
| #03211B text on white | 16.97:1 | AAA | Lc 103.7 | Preferred for body text |
| #03211B text on black | 1.23:1 | 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
#C9DFD9
oklch(88.6% 0.025 177.6)
-
Step 300
300
#A3CBC0
oklch(81% 0.045 176.5)
-
Step 400
400
#6EB0A0
oklch(70.8% 0.072 177)
-
Step 500
500
#419C88
oklch(63.2% 0.092 176.4)
-
Step 600
600
#118672
oklch(55.6% 0.1 176.9)
-
Step 700
700
#007160
oklch(49.1% 0.091 177.4)
-
Step 800
800
#085C4E
oklch(42.6% 0.076 177.2)
-
Step 900
900
#154C41
oklch(37.8% 0.06 176.9)
-
Step 950
950 (this color)
#03211B
oklch(22.3% 0.038 177.1)
#03211B 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) | #1F1E1B | 0.040 |
| Deuteranopia (no green cones) | #1B1B1B | 0.038 |
| Tritanopia (no blue cones) | #00221F | 0.007 |
| Achromatopsia (no color) | #1C1C1C | 0.038 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #03211B
#03211B
oklch(22.3% 0.038 177.1)
- #29141C
#29141C
oklch(22.4% 0.037 356.1)
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 #03211B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.045
- Jet #212529 ΔE 0.053
- Dark #1B2431 ΔE 0.055
- Rich Navy #001219 ΔE 0.061
- Dark Forest Green #002D04 ΔE 0.065
- Very Dark Green #062E03 ΔE 0.069
- Oxford Blue #1B263B ΔE 0.071
- Almost Black #070D0D ΔE 0.076
Use #03211B 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.