#00221E
Closest named color: Rich Black (#0D1B2A). oklch(22.6% 0.04 183.6), rgb(0, 34, 30).
Aa
White text reads best on this color (16.83:1).
About this color
#00221E is a very dark, muted teal or cyan. In OKLCH its lightness is 23%, its chroma 0.040 and its hue 184°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.043 away. White text reads best on it, at 16.83:1.
| Hue family | Teals and cyans |
| Lightness | very dark (23%) |
| Chroma | muted (0.040) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.24:1 |
| White text | 16.83:1 |
Values
| HEX | #00221E |
| RGB | rgb(0, 34, 30) |
| HSL | hsl(173, 100%, 7%) |
| OKLCH | oklch(22.6% 0.04 183.6) |
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 #00221E | 16.83:1 | AAA | Lc -106.0 | Preferred for body text |
| Black text on #00221E | 1.24:1 | Fails | Lc 0.0 | Not readable |
| #00221E text on white | 16.83:1 | AAA | Lc 103.5 | Preferred for body text |
| #00221E 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
#F1F7F6
oklch(97.1% 0.006 185.3)
-
Step 100
100
#E0EDEB
oklch(93.6% 0.014 185.9)
-
Step 200
200
#C7DFDB
oklch(88.5% 0.026 184.7)
-
Step 300
300
#9FCBC4
oklch(80.9% 0.047 184.4)
-
Step 400
400
#66B0A5
oklch(70.6% 0.076 183.5)
-
Step 500
500
#329C90
oklch(63% 0.096 184.3)
-
Step 600
600
#008679
oklch(55.7% 0.099 183.1)
-
Step 700
700
#007066
oklch(49% 0.087 184.2)
-
Step 800
800
#005C53
oklch(42.6% 0.076 183.4)
-
Step 900
900
#094C45
oklch(37.6% 0.063 184)
-
Step 950
950 (this color)
#00221E
oklch(22.6% 0.04 183.6)
#00221E 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) | #201F1E | 0.043 |
| Deuteranopia (no green cones) | #1B1C1E | 0.040 |
| Tritanopia (no blue cones) | #002321 | 0.006 |
| Achromatopsia (no color) | #1D1D1D | 0.040 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00221E
#00221E
oklch(22.6% 0.04 183.6)
- #2B141A
#2B141A
oklch(22.7% 0.039 3.9)
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 #00221E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.043
- Jet #212529 ΔE 0.052
- Dark #1B2431 ΔE 0.053
- Rich Navy #001219 ΔE 0.063
- Dark Forest Green #002D04 ΔE 0.066
- Oxford Blue #1B263B ΔE 0.068
- Very Dark Green #062E03 ΔE 0.070
- Almost Black #070D0D ΔE 0.080
Use #00221E 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.