#423A2B
Closest named color: Charcoal Grey (#3C4142). oklch(35.2% 0.027 83), rgb(66, 58, 43).
Aa
White text reads best on this color (11.21:1).
About this color
#423A2B is a dark close to neutral grey. In OKLCH its lightness is 35%, its chroma 0.027. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.037 away. White text reads best on it, at 11.21:1.
| Hue family | Neutrals |
| Lightness | dark (35%) |
| Chroma | close to neutral grey (0.027) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 1.87:1 |
| White text | 11.21:1 |
Values
| HEX | #423A2B |
| RGB | rgb(66, 58, 43) |
| HSL | hsl(39, 21%, 21%) |
| OKLCH | oklch(35.2% 0.027 83) |
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 #423A2B | 11.21:1 | AAA | Lc -99.7 | Preferred for body text |
| Black text on #423A2B | 1.87:1 | Fails | Lc 8.0 | Not readable |
| #423A2B text on white | 11.21:1 | AAA | Lc 95.9 | Preferred for body text |
| #423A2B text on black | 1.87:1 | 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 900.
-
Step 50
50
#F6F5F3
oklch(97% 0.003 84.6)
-
Step 100
100
#ECE9E5
oklch(93.5% 0.006 75.4)
-
Step 200
200
#DDD9D1
oklch(88.6% 0.012 84.6)
-
Step 300
300
#C7C0B2
oklch(81% 0.021 84.6)
-
Step 400
400
#AA9F8A
oklch(70.6% 0.032 83.6)
-
Step 500
500
#96886D
oklch(63.2% 0.042 83.7)
-
Step 600
600
#807155
oklch(55.5% 0.045 82.9)
-
Step 700
700
#6C5F45
oklch(49.1% 0.042 84.3)
-
Step 800
800
#584D39
oklch(42.5% 0.034 82.3)
-
Step 900
900 (this color)
#423A2B
oklch(35.2% 0.027 83)
-
Step 950
950
#2B261D
oklch(27.1% 0.018 82.2)
#423A2B 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) | #3E3A2A | 0.008 |
| Deuteranopia (no green cones) | #403C2B | 0.007 |
| Tritanopia (no blue cones) | #463736 | 0.025 |
| Achromatopsia (no color) | #3B3B3B | 0.027 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #423A2B
#423A2B
oklch(35.2% 0.027 83)
- #343B4A
#343B4A
oklch(35.2% 0.028 265.3)
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 #423A2B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.037
- Onyx #343A40 ΔE 0.041
- Pakistan Green #283618 ΔE 0.057
- Dark Olive #373E02 ΔE 0.058
- Gunmetal #293241 ΔE 0.068
- Charcoal #264653 ΔE 0.071
- Dark Blue Grey #1F3B4D ΔE 0.073
- Dark Slate Gray #2F4F4F ΔE 0.074
Use #423A2B 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.