#423A2F
Closest named color: Charcoal Grey (#3C4142). oklch(35.3% 0.021 75.7), rgb(66, 58, 47).
Aa
White text reads best on this color (11.18:1).
About this color
#423A2F is a dark close to neutral grey. In OKLCH its lightness is 35%, its chroma 0.021. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.032 away. White text reads best on it, at 11.18:1.
| Hue family | Neutrals |
| Lightness | dark (35%) |
| Chroma | close to neutral grey (0.021) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 1.87:1 |
| White text | 11.18:1 |
Values
| HEX | #423A2F |
| RGB | rgb(66, 58, 47) |
| HSL | hsl(35, 17%, 22%) |
| OKLCH | oklch(35.3% 0.021 75.7) |
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 #423A2F | 11.18:1 | AAA | Lc -99.6 | Preferred for body text |
| Black text on #423A2F | 1.87:1 | Fails | Lc 8.0 | Not readable |
| #423A2F text on white | 11.18:1 | AAA | Lc 95.9 | Preferred for body text |
| #423A2F 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
#F6F5F4
oklch(97.1% 0.002 67.8)
-
Step 100
100
#ECE9E6
oklch(93.6% 0.005 67.8)
-
Step 200
200
#DDD8D3
oklch(88.5% 0.009 67.7)
-
Step 300
300
#C7BFB5
oklch(80.8% 0.017 73.6)
-
Step 400
400
#AA9F8F
oklch(70.7% 0.026 77.4)
-
Step 500
500
#958774
oklch(63.1% 0.032 75.5)
-
Step 600
600
#80715C
oklch(55.7% 0.036 76.1)
-
Step 700
700
#6C5E4C
oklch(49% 0.033 73.9)
-
Step 800
800
#584D3E
oklch(42.7% 0.028 75.5)
-
Step 900
900 (this color)
#423A2F
oklch(35.3% 0.021 75.7)
-
Step 950
950
#2A261F
oklch(27.1% 0.014 81.7)
#423A2F 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) | #3D3A2E | 0.009 |
| Deuteranopia (no green cones) | #3F3C2F | 0.008 |
| Tritanopia (no blue cones) | #453837 | 0.018 |
| Achromatopsia (no color) | #3B3B3B | 0.021 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #423A2F
#423A2F
oklch(35.3% 0.021 75.7)
- #343C47
#343C47
oklch(35.3% 0.022 256.4)
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 #423A2F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.032
- Onyx #343A40 ΔE 0.036
- Pakistan Green #283618 ΔE 0.060
- Gunmetal #293241 ΔE 0.064
- Dark Olive #373E02 ΔE 0.064
- Charcoal #264653 ΔE 0.067
- Dark Blue Grey #1F3B4D ΔE 0.069
- Dark Slate Gray #2F4F4F ΔE 0.072
Use #423A2F 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.