#424233
Closest named color: Charcoal Grey (#3C4142). oklch(37.4% 0.025 107.5), rgb(66, 66, 51).
Aa
White text reads best on this color (10.20:1).
About this color
#424233 is a dark close to neutral grey. In OKLCH its lightness is 37%, its chroma 0.025. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.027 away. White text reads best on it, at 10.20:1.
| Hue family | Neutrals |
| Lightness | dark (37%) |
| Chroma | close to neutral grey (0.025) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.05:1 |
| White text | 10.20:1 |
Values
| HEX | #424233 |
| RGB | rgb(66, 66, 51) |
| HSL | hsl(60, 13%, 23%) |
| OKLCH | oklch(37.4% 0.025 107.5) |
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 #424233 | 10.20:1 | AAA | Lc -97.8 | Preferred for body text |
| Black text on #424233 | 2.05:1 | Fails | Lc 10.2 | Not readable |
| #424233 text on white | 10.20:1 | AAA | Lc 93.7 | Preferred for body text |
| #424233 text on black | 2.05:1 | Fails | Lc -8.8 | 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
#F5F5F4
oklch(97% 0.001 106.4)
-
Step 100
100
#EAEAE6
oklch(93.6% 0.005 106.5)
-
Step 200
200
#D9DAD2
oklch(88.5% 0.011 112.4)
-
Step 300
300
#C1C2B4
oklch(80.9% 0.019 110.1)
-
Step 400
400
#A2A28D
oklch(70.6% 0.03 107.1)
-
Step 500
500
#8B8B71
oklch(63% 0.037 107.4)
-
Step 600
600
#75755A
oklch(55.5% 0.04 107.6)
-
Step 700
700
#636349
oklch(49.2% 0.039 107.8)
-
Step 800
800
#50503C
oklch(42.5% 0.032 107.7)
-
Step 900
900 (this color)
#424233
oklch(37.4% 0.025 107.5)
-
Step 950
950
#27271E
oklch(27% 0.016 107.4)
#424233 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) | #454132 | 0.005 |
| Deuteranopia (no green cones) | #454134 | 0.006 |
| Tritanopia (no blue cones) | #44403E | 0.022 |
| Achromatopsia (no color) | #414141 | 0.025 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #424233
#424233
oklch(37.4% 0.025 107.5)
- #403F4E
#403F4E
oklch(37.5% 0.025 288.2)
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 #424233, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.027
- Onyx #343A40 ΔE 0.046
- Dark Slate Gray #2F4F4F ΔE 0.053
- Charcoal #264653 ΔE 0.060
- Dark Olive #373E02 ΔE 0.061
- Mud Brown #60460F ΔE 0.068
- Dark Teal #014D4E ΔE 0.069
- Dark Grey Blue #29465B ΔE 0.070
Use #424233 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.