#423929
Closest named color: Charcoal Grey (#3C4142). oklch(34.9% 0.029 81.7), rgb(66, 57, 41).
Aa
White text reads best on this color (11.35:1).
About this color
#423929 is a dark close to neutral grey. In OKLCH its lightness is 35%, its chroma 0.029. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.040 away. White text reads best on it, at 11.35:1.
| Hue family | Neutrals |
| Lightness | dark (35%) |
| Chroma | close to neutral grey (0.029) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 1.84:1 |
| White text | 11.35:1 |
Values
| HEX | #423929 |
| RGB | rgb(66, 57, 41) |
| HSL | hsl(38, 23%, 21%) |
| OKLCH | oklch(34.9% 0.029 81.7) |
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 #423929 | 11.35:1 | AAA | Lc -99.9 | Preferred for body text |
| Black text on #423929 | 1.84:1 | Fails | Lc 7.7 | Not readable |
| #423929 text on white | 11.35:1 | AAA | Lc 96.2 | Preferred for body text |
| #423929 text on black | 1.84:1 | 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
#DDD8D0
oklch(88.4% 0.012 79.8)
-
Step 300
300
#C8C0B1
oklch(81% 0.023 83.3)
-
Step 400
400
#AC9F89
oklch(70.8% 0.034 80.9)
-
Step 500
500
#97876B
oklch(63% 0.044 81.5)
-
Step 600
600
#827153
oklch(55.7% 0.048 81.5)
-
Step 700
700
#6E5E43
oklch(49% 0.045 80.4)
-
Step 800
800
#594D38
oklch(42.6% 0.036 81.4)
-
Step 900
900 (this color)
#423929
oklch(34.9% 0.029 81.7)
-
Step 950
950
#2B261C
oklch(27.1% 0.019 84.5)
#423929 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) | #3D3928 | 0.009 |
| Deuteranopia (no green cones) | #3F3B29 | 0.008 |
| Tritanopia (no blue cones) | #463635 | 0.026 |
| Achromatopsia (no color) | #3A3A3A | 0.029 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #423929
#423929
oklch(34.9% 0.029 81.7)
- #323B4A
#323B4A
oklch(35% 0.029 260.6)
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 #423929, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.040
- Onyx #343A40 ΔE 0.042
- Pakistan Green #283618 ΔE 0.055
- Dark Olive #373E02 ΔE 0.057
- Gunmetal #293241 ΔE 0.068
- Charcoal #264653 ΔE 0.074
- Dark Blue Grey #1F3B4D ΔE 0.075
- Dark Slate Gray #2F4F4F ΔE 0.078
Use #423929 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.