#423734
Closest named color: Onyx (#343A40). oklch(34.8% 0.017 35.7), rgb(66, 55, 52).
Aa
White text reads best on this color (11.48:1).
About this color
#423734 is a dark close to neutral grey. In OKLCH its lightness is 35%, its chroma 0.017. It has too little chroma to lean warm or cool. The nearest named color is Onyx (#343A40), ΔE 0.029 away. White text reads best on it, at 11.48:1.
| Hue family | Neutrals |
| Lightness | dark (35%) |
| Chroma | close to neutral grey (0.017) |
| Temperature | neutral |
| Nearest name | Onyx (#343A40) |
| Black text | 1.82:1 |
| White text | 11.48:1 |
Values
| HEX | #423734 |
| RGB | rgb(66, 55, 52) |
| HSL | hsl(13, 12%, 23%) |
| OKLCH | oklch(34.8% 0.017 35.7) |
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 #423734 | 11.48:1 | AAA | Lc -100.2 | Preferred for body text |
| Black text on #423734 | 1.82:1 | Fails | Lc 7.4 | Not readable |
| #423734 text on white | 11.48:1 | AAA | Lc 96.5 | Preferred for body text |
| #423734 text on black | 1.82:1 | 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
#F6F5F5
oklch(97.1% 0.001 17.2)
-
Step 100
100
#ECE9E8
oklch(93.6% 0.004 39.5)
-
Step 200
200
#DDD8D6
oklch(88.6% 0.006 43.3)
-
Step 300
300
#C8BEBB
oklch(80.9% 0.012 37.4)
-
Step 400
400
#AC9D98
oklch(70.8% 0.019 39.4)
-
Step 500
500
#98847F
oklch(63% 0.026 34.3)
-
Step 600
600
#836E68
oklch(55.6% 0.028 36.5)
-
Step 700
700
#6E5C57
oklch(49.1% 0.025 36)
-
Step 800
800
#5A4B47
oklch(42.7% 0.021 35.3)
-
Step 900
900 (this color)
#423734
oklch(34.8% 0.017 35.7)
-
Step 950
950
#2B2523
oklch(27% 0.01 39.3)
#423734 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) | #393834 | 0.016 |
| Deuteranopia (no green cones) | #3C3A34 | 0.014 |
| Tritanopia (no blue cones) | #453636 | 0.008 |
| Achromatopsia (no color) | #393939 | 0.017 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #423734
#423734
oklch(34.8% 0.017 35.7)
- #303C3F
#303C3F
oklch(34.7% 0.017 214.6)
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 #423734, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.029
- Charcoal Grey #3C4142 ΔE 0.033
- Gunmetal #293241 ΔE 0.054
- Dark Blue Grey #1F3B4D ΔE 0.063
- Space Cadet #2B2D42 ΔE 0.064
- Charcoal #264653 ΔE 0.066
- Pakistan Green #283618 ΔE 0.067
- Dark Grey Blue #29465B ΔE 0.074
Use #423734 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.