#423E48
Closest named color: Charcoal Grey (#3C4142). oklch(37.2% 0.018 303.7), rgb(66, 62, 72).
Aa
White text reads best on this color (10.42:1).
About this color
#423E48 is a dark close to neutral grey. In OKLCH its lightness is 37%, its chroma 0.018. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.019 away. White text reads best on it, at 10.42:1.
| Hue family | Neutrals |
| Lightness | dark (37%) |
| Chroma | close to neutral grey (0.018) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.01:1 |
| White text | 10.42:1 |
Values
| HEX | #423E48 |
| RGB | rgb(66, 62, 72) |
| HSL | hsl(264, 7%, 26%) |
| OKLCH | oklch(37.2% 0.018 303.7) |
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 #423E48 | 10.42:1 | AAA | Lc -98.2 | Preferred for body text |
| Black text on #423E48 | 2.01:1 | Fails | Lc 9.7 | Not readable |
| #423E48 text on white | 10.42:1 | AAA | Lc 94.2 | Preferred for body text |
| #423E48 text on black | 2.01:1 | Fails | Lc -8.3 | 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
#F6F5F6
oklch(97.1% 0.002 325.6)
-
Step 100
100
#EAE9EC
oklch(93.6% 0.004 301.4)
-
Step 200
200
#DAD8DD
oklch(88.5% 0.007 304.2)
-
Step 300
300
#C2BFC8
oklch(81% 0.013 301.2)
-
Step 400
400
#A39EAC
oklch(70.8% 0.021 302.1)
-
Step 500
500
#8D8697
oklch(63.2% 0.026 304.3)
-
Step 600
600
#776F82
oklch(55.6% 0.03 304.5)
-
Step 700
700
#645D6E
oklch(49.1% 0.028 304)
-
Step 800
800
#514C59
oklch(42.6% 0.022 302.9)
-
Step 900
900 (this color)
#423E48
oklch(37.2% 0.018 303.7)
-
Step 950
950
#27252B
oklch(26.9% 0.011 300.8)
#423E48 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) | #3C4048 | 0.011 |
| Deuteranopia (no green cones) | #3D4048 | 0.010 |
| Tritanopia (no blue cones) | #413F41 | 0.014 |
| Achromatopsia (no color) | #404040 | 0.018 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #423E48
#423E48
oklch(37.2% 0.018 303.7)
- #3E4238
#3E4238
oklch(37.2% 0.017 125)
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 #423E48, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.019
- Onyx #343A40 ΔE 0.030
- Charcoal #264653 ΔE 0.044
- Dark Grey Blue #29465B ΔE 0.046
- Dark Blue Grey #1F3B4D ΔE 0.054
- Dark Slate Gray #2F4F4F ΔE 0.056
- Gunmetal #293241 ΔE 0.060
- Purple Brown #673A3F ΔE 0.069
Use #423E48 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.