#24423B
Closest named color: Onyx (#343A40). oklch(35.3% 0.038 177.3), rgb(36, 66, 59).
Aa
White text reads best on this color (10.95:1).
About this color
#24423B is a dark, muted teal or cyan. In OKLCH its lightness is 35%, its chroma 0.038 and its hue 177°. 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 10.95:1.
| Hue family | Teals and cyans |
| Lightness | dark (35%) |
| Chroma | muted (0.038) |
| Temperature | cool |
| Nearest name | Onyx (#343A40) |
| Black text | 1.91:1 |
| White text | 10.95:1 |
Values
| HEX | #24423B |
| RGB | rgb(36, 66, 59) |
| HSL | hsl(166, 29%, 20%) |
| OKLCH | oklch(35.3% 0.038 177.3) |
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 #24423B | 10.95:1 | AAA | Lc -99.1 | Preferred for body text |
| Black text on #24423B | 1.91:1 | Fails | Lc 8.6 | Not readable |
| #24423B text on white | 10.95:1 | AAA | Lc 95.3 | Preferred for body text |
| #24423B text on black | 1.91:1 | Fails | Lc -7.4 | 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
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E4ECEA
oklch(93.6% 0.009 179.6)
-
Step 200
200
#CFDDD9
oklch(88.6% 0.016 177)
-
Step 300
300
#AEC7C0
oklch(80.9% 0.029 176.9)
-
Step 400
400
#82AAA0
oklch(70.6% 0.046 177.9)
-
Step 500
500
#629589
oklch(63% 0.058 177.9)
-
Step 600
600
#478073
oklch(55.7% 0.064 177.4)
-
Step 700
700
#386C60
oklch(49.1% 0.06 176.9)
-
Step 800
800
#2F584F
oklch(42.7% 0.049 178)
-
Step 900
900 (this color)
#24423B
oklch(35.3% 0.038 177.3)
-
Step 950
950
#192A26
oklch(26.9% 0.024 178)
#24423B 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) | #403F3B | 0.040 |
| Deuteranopia (no green cones) | #3B3B3C | 0.039 |
| Tritanopia (no blue cones) | #1A4340 | 0.011 |
| Achromatopsia (no color) | #3C3C3C | 0.038 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #24423B
#24423B
oklch(35.3% 0.038 177.3)
- #4C333B
#4C333B
oklch(35.3% 0.038 358.4)
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 #24423B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.037
- Charcoal Grey #3C4142 ΔE 0.037
- Charcoal #264653 ΔE 0.041
- Dark Teal #014D4E ΔE 0.042
- Evergreen #05472A ΔE 0.046
- Dark Blue Grey #1F3B4D ΔE 0.046
- Midnight Green #073B4C ΔE 0.050
- Dark Slate Gray #2F4F4F ΔE 0.051
Use #24423B 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.