#20423E
Closest named color: Onyx (#343A40). oklch(35.2% 0.041 185.7), rgb(32, 66, 62).
Aa
White text reads best on this color (10.99:1).
About this color
#20423E is a dark, muted teal or cyan. In OKLCH its lightness is 35%, its chroma 0.041 and its hue 186°. Its hue sits on the cool side of the wheel. The nearest named color is Onyx (#343A40), ΔE 0.037 away. White text reads best on it, at 10.99:1.
| Hue family | Teals and cyans |
| Lightness | dark (35%) |
| Chroma | muted (0.041) |
| Temperature | cool |
| Nearest name | Onyx (#343A40) |
| Black text | 1.91:1 |
| White text | 10.99:1 |
Values
| HEX | #20423E |
| RGB | rgb(32, 66, 62) |
| HSL | hsl(173, 35%, 19%) |
| OKLCH | oklch(35.2% 0.041 185.7) |
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 #20423E | 10.99:1 | AAA | Lc -99.2 | Preferred for body text |
| Black text on #20423E | 1.91:1 | Fails | Lc 8.6 | Not readable |
| #20423E text on white | 10.99:1 | AAA | Lc 95.3 | Preferred for body text |
| #20423E text on black | 1.91:1 | Fails | Lc -7.3 | 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 900.
-
Step 50
50
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E4ECEB
oklch(93.7% 0.009 188.1)
-
Step 200
200
#CDDDDB
oklch(88.5% 0.017 187.8)
-
Step 300
300
#ACC7C3
oklch(80.8% 0.03 185.8)
-
Step 400
400
#7EABA5
oklch(70.7% 0.049 185.9)
-
Step 500
500
#5C968F
oklch(63.1% 0.062 186)
-
Step 600
600
#408079
oklch(55.5% 0.067 186.2)
-
Step 700
700
#316C66
oklch(49% 0.062 186.5)
-
Step 800
800
#2A5853
oklch(42.6% 0.051 186.2)
-
Step 900
900 (this color)
#20423E
oklch(35.2% 0.041 185.7)
-
Step 950
950
#172B28
oklch(27.1% 0.027 183.8)
#20423E 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) | #3F3F3E | 0.043 |
| Deuteranopia (no green cones) | #393A3E | 0.041 |
| Tritanopia (no blue cones) | #104341 | 0.013 |
| Achromatopsia (no color) | #3C3C3C | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #20423E
#20423E
oklch(35.2% 0.041 185.7)
- #4D3238
#4D3238
oklch(35.1% 0.04 4.8)
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 #20423E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.037
- Charcoal #264653 ΔE 0.037
- Dark Teal #014D4E ΔE 0.039
- Charcoal Grey #3C4142 ΔE 0.039
- Dark Blue Grey #1F3B4D ΔE 0.041
- Midnight Green #073B4C ΔE 0.044
- Evergreen #05472A ΔE 0.048
- Dark Blue Green #005249 ΔE 0.051
Use #20423E 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.