#424240

Closest named color: Charcoal Grey (#3C4142). oklch(37.8% 0.003 106.6), rgb(66, 66, 64).

White text reads best on this color (10.07:1).

About this color

#424240 is a dark close to neutral grey. In OKLCH its lightness is 38%, its chroma 0.003. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.011 away. White text reads best on it, at 10.07:1.

Hue family	Neutrals
Lightness	dark (38%)
Chroma	close to neutral grey (0.003)
Temperature	neutral
Nearest name	Charcoal Grey (#3C4142)
Black text	2.08:1
White text	10.07:1

Values

HEX	#424240
RGB	rgb(66, 66, 64)
HSL	hsl(60, 2%, 25%)
OKLCH	oklch(37.8% 0.003 106.6)

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 #424240	10.07:1	AAA	Lc -97.5	Preferred for body text
Black text on #424240	2.08:1	Fails	Lc 10.5	Not readable
#424240 text on white	10.07:1	AAA	Lc 93.4	Preferred for body text
#424240 text on black	2.08:1	Fails	Lc -9.1	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

#F5F5F5

oklch(97% 0 0)
Step 100
100

#EAEAE9

oklch(93.7% 0.001 106.4)
Step 200
200

#D9D9D8

oklch(88.5% 0.001 106.4)
Step 300
300

#C1C1BF

oklch(81% 0.003 106.5)
Step 400
400

#A1A19E

oklch(70.8% 0.004 106.5)
Step 500
500

#8A8A86

oklch(63.2% 0.006 106.6)
Step 600
600

#737370

oklch(55.5% 0.005 106.5)
Step 700
700

#61615E

oklch(49.2% 0.005 106.6)
Step 800
800

#4F4F4C

oklch(42.7% 0.005 106.6)
Step 900
900 (this color)

#424240

oklch(37.8% 0.003 106.6)
Step 950
950

#262625

oklch(26.8% 0.002 106.5)

Export this scale for Tailwind in the Tailwind colors tool

#424240 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)	#424240	0.000
Deuteranopia (no green cones)	#424240	0.000
Tritanopia (no blue cones)	#424241	0.002
Achromatopsia (no color)	#424242	0.003

Harmonies

Hue rotations in OKLCH that keep this color's lightness and chroma.

This color is close to neutral, so it has no meaningful hue to rotate. Hue harmonies are omitted.

Palettes with this color

Curated palettes that contain a color within ΔE 0.04 (OKLab) of #424240, closest first.

Similar named colors

The eight closest entries in our named color list, with their ΔE distance.

Use #424240 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.

Build a color system from this color Generate a palette