#07221B
Closest named color: Rich Black (#0D1B2A). oklch(22.9% 0.036 173.1), rgb(7, 34, 27).
Aa
White text reads best on this color (16.75:1).
About this color
#07221B is a very dark, muted teal or cyan. In OKLCH its lightness is 23%, its chroma 0.036 and its hue 173°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.046 away. White text reads best on it, at 16.75:1.
| Hue family | Teals and cyans |
| Lightness | very dark (23%) |
| Chroma | muted (0.036) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.25:1 |
| White text | 16.75:1 |
Values
| HEX | #07221B |
| RGB | rgb(7, 34, 27) |
| HSL | hsl(164, 66%, 8%) |
| OKLCH | oklch(22.9% 0.036 173.1) |
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 #07221B | 16.75:1 | AAA | Lc -106.0 | Preferred for body text |
| Black text on #07221B | 1.25:1 | Fails | Lc 0.0 | Not readable |
| #07221B text on white | 16.75:1 | AAA | Lc 103.6 | Preferred for body text |
| #07221B text on black | 1.25:1 | 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
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E2EDE9
oklch(93.7% 0.013 172.4)
-
Step 200
200
#CADED8
oklch(88.4% 0.023 175.9)
-
Step 300
300
#A6CABE
oklch(80.9% 0.042 173)
-
Step 400
400
#73AF9D
oklch(70.8% 0.068 173.4)
-
Step 500
500
#4A9B85
oklch(63.2% 0.087 173.3)
-
Step 600
600
#26856E
oklch(55.6% 0.094 173)
-
Step 700
700
#16715C
oklch(49.2% 0.088 172.8)
-
Step 800
800
#175C4B
oklch(42.8% 0.073 172.6)
-
Step 900
900
#1C4B3F
oklch(37.6% 0.055 173.8)
-
Step 950
950 (this color)
#07221B
oklch(22.9% 0.036 173.1)
#07221B 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) | #211F1B | 0.038 |
| Deuteranopia (no green cones) | #1D1C1B | 0.036 |
| Tritanopia (no blue cones) | #002220 | 0.011 |
| Achromatopsia (no color) | #1E1E1E | 0.036 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #07221B
#07221B
oklch(22.9% 0.036 173.1)
- #2A151E
#2A151E
oklch(22.9% 0.037 353.2)
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 #07221B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.046
- Jet #212529 ΔE 0.048
- Dark #1B2431 ΔE 0.052
- Dark Forest Green #002D04 ΔE 0.062
- Very Dark Green #062E03 ΔE 0.065
- Rich Navy #001219 ΔE 0.066
- Oxford Blue #1B263B ΔE 0.068
- Dark Brown #341C02 ΔE 0.078
Use #07221B 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.