#858A91

Closest named color: Light Slate Gray (#778899). oklch(63.2% 0.012 256.7), rgb(133, 138, 145).

Black text reads best on this color (6.04:1).

About this color

#858A91 is a medium-light close to neutral grey. In OKLCH its lightness is 63%, its chroma 0.012. It has too little chroma to lean warm or cool. The nearest named color is Light Slate Gray (#778899), ΔE 0.024 away. Black text reads best on it, at 6.04:1.

Hue family	Neutrals
Lightness	medium-light (63%)
Chroma	close to neutral grey (0.012)
Temperature	neutral
Nearest name	Light Slate Gray (#778899)
Black text	6.04:1
White text	3.47:1

Values

HEX	#858A91
RGB	rgb(133, 138, 145)
HSL	hsl(215, 5%, 55%)
OKLCH	oklch(63.2% 0.012 256.7)

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 #858A91	3.47:1	AA large text	Lc -67.8	Content text, not long reading
Black text on #858A91	6.04:1	AA	Lc 41.7	Non-text elements, placeholder text
#858A91 text on white	3.47:1	AA large text	Lc 62.3	Content text, not long reading
#858A91 text on black	6.04:1	AA	Lc -39.4	Non-text elements, placeholder text

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 500.

Step 50
50

#F5F5F6

oklch(97% 0.001 286.4)
Step 100
100

#E9EAEB

oklch(93.7% 0.002 247.8)
Step 200
200

#D8D9DB

oklch(88.5% 0.003 264.5)
Step 300
300

#BEC1C4

oklch(80.9% 0.005 247.9)
Step 400
400

#9DA1A6

oklch(70.7% 0.009 253.9)
Step 500
500 (this color)

#858A91

oklch(63.2% 0.012 256.7)
Step 600
600

#6E747B

oklch(55.6% 0.013 252.2)
Step 700
700

#5C6168

oklch(49.1% 0.013 256.7)
Step 800
800

#4B4F55

oklch(42.6% 0.011 258.4)
Step 900
900

#3F4246

oklch(37.8% 0.008 255.5)
Step 950
950

#252729

oklch(27.1% 0.005 248)

Export this scale for Tailwind in the Tailwind colors tool

#858A91 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)	#888A91	0.004
Deuteranopia (no green cones)	#878991	0.004
Tritanopia (no blue cones)	#828B8C	0.010
Achromatopsia (no color)	#898989	0.012

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 #858A91, closest first.

Similar named colors

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

Use #858A91 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