#04221E
Closest named color: Rich Black (#0D1B2A). oklch(22.8% 0.036 182.7), rgb(4, 34, 30).
Aa
White text reads best on this color (16.76:1).
About this color
#04221E is a very dark, muted teal or cyan. In OKLCH its lightness is 23%, its chroma 0.036 and its hue 183°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.042 away. White text reads best on it, at 16.76:1.
| 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 | 16.76:1 |
Values
| HEX | #04221E |
| RGB | rgb(4, 34, 30) |
| HSL | hsl(172, 79%, 7%) |
| OKLCH | oklch(22.8% 0.036 182.7) |
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 #04221E | 16.76:1 | AAA | Lc -106.0 | Preferred for body text |
| Black text on #04221E | 1.25:1 | Fails | Lc 0.0 | Not readable |
| #04221E text on white | 16.76:1 | AAA | Lc 103.5 | Preferred for body text |
| #04221E 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
#F1F7F6
oklch(97.1% 0.006 185.3)
-
Step 100
100
#E1EDEA
oklch(93.6% 0.013 179.5)
-
Step 200
200
#C9DFDA
oklch(88.6% 0.024 180.6)
-
Step 300
300
#A3CAC3
oklch(80.9% 0.043 183.1)
-
Step 400
400
#6EAFA4
oklch(70.7% 0.069 182.4)
-
Step 500
500
#419B8E
oklch(63.1% 0.088 182.5)
-
Step 600
600
#118578
oklch(55.5% 0.096 182.7)
-
Step 700
700
#007165
oklch(49.2% 0.088 182.2)
-
Step 800
800
#085C53
oklch(42.8% 0.074 183.2)
-
Step 900
900
#154B44
oklch(37.6% 0.057 183)
-
Step 950
950 (this color)
#04221E
oklch(22.8% 0.036 182.7)
#04221E 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 | 0.039 |
| Deuteranopia (no green cones) | #1B1C1E | 0.036 |
| Tritanopia (no blue cones) | #002321 | 0.006 |
| Achromatopsia (no color) | #1E1E1E | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #04221E
#04221E
oklch(22.8% 0.036 182.7)
- #2B151B
#2B151B
oklch(22.9% 0.037 2.8)
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 #04221E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.042
- Jet #212529 ΔE 0.048
- Dark #1B2431 ΔE 0.049
- Rich Navy #001219 ΔE 0.064
- Oxford Blue #1B263B ΔE 0.065
- Dark Forest Green #002D04 ΔE 0.066
- Very Dark Green #062E03 ΔE 0.069
- Almost Black #070D0D ΔE 0.081
Use #04221E 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.