#03221B
Closest named color: Rich Black (#0D1B2A). oklch(22.7% 0.039 174.9), rgb(3, 34, 27).
Aa
White text reads best on this color (16.82:1).
About this color
#03221B is a very dark, muted teal or cyan. In OKLCH its lightness is 23%, its chroma 0.039 and its hue 175°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.047 away. White text reads best on it, at 16.82:1.
| Hue family | Teals and cyans |
| Lightness | very dark (23%) |
| Chroma | muted (0.039) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.24:1 |
| White text | 16.82:1 |
Values
| HEX | #03221B |
| RGB | rgb(3, 34, 27) |
| HSL | hsl(166, 84%, 7%) |
| OKLCH | oklch(22.7% 0.039 174.9) |
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 #03221B | 16.82:1 | AAA | Lc -106.0 | Preferred for body text |
| Black text on #03221B | 1.24:1 | Fails | Lc 0.0 | Not readable |
| #03221B text on white | 16.82:1 | AAA | Lc 103.6 | Preferred for body text |
| #03221B text on black | 1.24:1 | 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
#E1EDE9
oklch(93.6% 0.014 174.2)
-
Step 200
200
#C9DFD8
oklch(88.5% 0.025 174.7)
-
Step 300
300
#A2CBBF
oklch(80.9% 0.047 175.3)
-
Step 400
400
#6DB09E
oklch(70.7% 0.074 175.1)
-
Step 500
500
#3E9C86
oklch(63.1% 0.095 175)
-
Step 600
600
#088770
oklch(55.7% 0.104 174.9)
-
Step 700
700
#00715E
oklch(49% 0.092 175.6)
-
Step 800
800
#035D4C
oklch(42.7% 0.08 174.4)
-
Step 900
900
#134C40
oklch(37.7% 0.062 175.7)
-
Step 950
950 (this color)
#03221B
oklch(22.7% 0.039 174.9)
#03221B 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) | #201F1B | 0.040 |
| Deuteranopia (no green cones) | #1C1C1C | 0.039 |
| Tritanopia (no blue cones) | #002320 | 0.009 |
| Achromatopsia (no color) | #1D1D1D | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #03221B
#03221B
oklch(22.7% 0.039 174.9)
- #2A141D
#2A141D
oklch(22.6% 0.039 354.6)
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 #03221B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.047
- Jet #212529 ΔE 0.052
- Dark #1B2431 ΔE 0.055
- Dark Forest Green #002D04 ΔE 0.062
- Rich Navy #001219 ΔE 0.065
- Very Dark Green #062E03 ΔE 0.065
- Oxford Blue #1B263B ΔE 0.071
- Almost Black #070D0D ΔE 0.080
Use #03221B 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.