#04222B
Closest named color: Rich Black (#0D1B2A). oklch(23.5% 0.039 221.6), rgb(4, 34, 43).
Aa
White text reads best on this color (16.55:1).
About this color
#04222B is a very dark, muted teal or cyan. In OKLCH its lightness is 23%, its chroma 0.039 and its hue 222°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.026 away. White text reads best on it, at 16.55:1.
| Hue family | Teals and cyans |
| Lightness | very dark (23%) |
| Chroma | muted (0.039) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.26:1 |
| White text | 16.55:1 |
Values
| HEX | #04222B |
| RGB | rgb(4, 34, 43) |
| HSL | hsl(194, 83%, 9%) |
| OKLCH | oklch(23.5% 0.039 221.6) |
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 #04222B | 16.55:1 | AAA | Lc -105.8 | Preferred for body text |
| Black text on #04222B | 1.26:1 | Fails | Lc 0.0 | Not readable |
| #04222B text on white | 16.55:1 | AAA | Lc 103.3 | Preferred for body text |
| #04222B text on black | 1.26:1 | 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
#F1F6F8
oklch(97% 0.006 223.5)
-
Step 100
100
#E1ECF0
oklch(93.6% 0.013 221.4)
-
Step 200
200
#C8DDE5
oklch(88.4% 0.025 222.6)
-
Step 300
300
#A1C8D6
oklch(80.9% 0.046 221.7)
-
Step 400
400
#6BABC1
oklch(70.6% 0.073 221.9)
-
Step 500
500
#3B96B2
oklch(63.1% 0.094 221.8)
-
Step 600
600
#01809E
oklch(55.6% 0.102 221.9)
-
Step 700
700
#006C85
oklch(49.2% 0.09 221.2)
-
Step 800
800
#00586D
oklch(42.6% 0.078 221.3)
-
Step 900
900
#114959
oklch(37.8% 0.062 221.4)
-
Step 950
950 (this color)
#04222B
oklch(23.5% 0.039 221.6)
#04222B 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) | #1D212B | 0.032 |
| Deuteranopia (no green cones) | #171D2B | 0.028 |
| Tritanopia (no blue cones) | #002525 | 0.019 |
| Achromatopsia (no color) | #1F1F1F | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #04222B
#04222B
oklch(23.5% 0.039 221.6)
- #2D170F
#2D170F
oklch(23.3% 0.039 40.6)
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 #04222B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.026
- Dark #1B2431 ΔE 0.033
- Jet #212529 ΔE 0.041
- Oxford Blue #1B263B ΔE 0.045
- Rich Navy #001219 ΔE 0.066
- Space Cadet #2B2D42 ΔE 0.079
- Navy Blue #001146 ΔE 0.081
- Gunmetal #293241 ΔE 0.084
Use #04222B 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.