#4D4F51

Closest named color: Dark Slate Gray (#2F4F4F). oklch(42.6% 0.004 247.9), rgb(77, 79, 81).

White text reads best on this color (8.22:1).

About this color

#4D4F51 is a dark close to neutral grey. In OKLCH its lightness is 43%, its chroma 0.004. It has too little chroma to lean warm or cool. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.042 away. White text reads best on it, at 8.22:1.

Hue family	Neutrals
Lightness	dark (43%)
Chroma	close to neutral grey (0.004)
Temperature	neutral
Nearest name	Dark Slate Gray (#2F4F4F)
Black text	2.55:1
White text	8.22:1

Values

HEX	#4D4F51
RGB	rgb(77, 79, 81)
HSL	hsl(210, 3%, 31%)
OKLCH	oklch(42.6% 0.004 247.9)

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 #4D4F51	8.22:1	AAA	Lc -93.1	Preferred for body text
Black text on #4D4F51	2.55:1	Fails	Lc 15.5	Dividers and decoration only
#4D4F51 text on white	8.22:1	AAA	Lc 88.5	Fine for body text
#4D4F51 text on black	2.55:1	Fails	Lc -13.7	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 800.

Step 50
50

#F5F5F6

oklch(97% 0.001 286.4)
Step 100
100

#E9EAEA

oklch(93.6% 0.001 197.1)
Step 200
200

#D8D9DA

oklch(88.5% 0.002 247.8)
Step 300
300

#BFC1C2

oklch(81% 0.003 228.8)
Step 400
400

#9FA1A3

oklch(70.8% 0.004 247.9)
Step 500
500

#878A8C

oklch(63.2% 0.005 236.5)
Step 600
600

#717476

oklch(55.7% 0.005 236.6)
Step 700
700

#5E6163

oklch(49.1% 0.005 236.6)
Step 800
800 (this color)

#4D4F51

oklch(42.6% 0.004 247.9)
Step 900
900

#404243

oklch(37.8% 0.003 228.9)
Step 950
950

#262627

oklch(26.9% 0.002 286.3)

Export this scale for Tailwind in the Tailwind colors tool

#4D4F51 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)	#4E4F51	0.002
Deuteranopia (no green cones)	#4E4F51	0.002
Tritanopia (no blue cones)	#4C4F50	0.002
Achromatopsia (no color)	#4F4F4F	0.004

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 #4D4F51, closest first.

Similar named colors

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

Use #4D4F51 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