#424A50

Closest named color: Dark Slate Gray (#2F4F4F). oklch(40.4% 0.015 240.2), rgb(66, 74, 80).

White text reads best on this color (9.02:1).

About this color

#424A50 is a dark close to neutral grey. In OKLCH its lightness is 40%, its chroma 0.015. It has too little chroma to lean warm or cool. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.029 away. White text reads best on it, at 9.02:1.

Hue family	Neutrals
Lightness	dark (40%)
Chroma	close to neutral grey (0.015)
Temperature	neutral
Nearest name	Dark Slate Gray (#2F4F4F)
Black text	2.32:1
White text	9.02:1

Values

HEX	#424A50
RGB	rgb(66, 74, 80)
HSL	hsl(206, 10%, 29%)
OKLCH	oklch(40.4% 0.015 240.2)

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 #424A50	9.02:1	AAA	Lc -95.1	Preferred for body text
Black text on #424A50	2.32:1	Fails	Lc 13.2	Not readable
#424A50 text on white	9.02:1	AAA	Lc 90.8	Preferred for body text
#424A50 text on black	2.32:1	Fails	Lc -11.6	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

#E8EAEB

oklch(93.6% 0.003 228.8)
Step 200
200

#D6D9DC

oklch(88.4% 0.005 247.9)
Step 300
300

#BCC1C6

oklch(80.8% 0.009 247.9)
Step 400
400

#99A2A8

oklch(70.7% 0.014 236.7)
Step 500
500

#808B93

oklch(63% 0.018 239.3)
Step 600
600

#6A757D

oklch(55.6% 0.018 239.3)
Step 700
700

#58626A

oklch(49% 0.018 242.1)
Step 800
800 (this color)

#424A50

oklch(40.4% 0.015 240.2)
Step 900
900

#3C4247

oklch(37.5% 0.012 243.1)
Step 950
950

#23272A

oklch(27% 0.008 240.2)

Export this scale for Tailwind in the Tailwind colors tool

#424A50 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)	#484A50	0.009
Deuteranopia (no green cones)	#464850	0.008
Tritanopia (no blue cones)	#3E4B4C	0.011
Achromatopsia (no color)	#494949	0.015

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 #424A50, closest first.

Similar named colors

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

Use #424A50 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