Medium dark grey — Ant grey 6

RGB: rgb(102 102 102)
HSL: hsl(0 0% 40%)
HWB: hwb(0 40% 60%)
Color family: Neutral
Recommended foreground: #FFFFFF

Calculated profile

What the numbers say

At 0° hue, Medium dark grey — Ant grey 6 is a near-neutral, mid-lightness, achromatic sRGB color. Its relative luminance is 13.29%. For text on this background, #FFFFFF produces the stronger contrast at 5.74:1.

HSL lightness: 40%
HSL saturation: 0%
Relative luminance: 13.29%
Hue group: achromatic

Copy-ready color formats

Equivalent sRGB notations calculated from the same six-digit HEX value.

Text contrast against this color

Ratios use WCAG relative luminance. Passing a ratio does not by itself certify an interface.

White text5.74:1

AA normal text: Pass
AA large text: Pass
AAA normal text: Fail
AAA large text: Pass

Black text3.66:1

AA normal text: Fail
AA large text: Pass
AAA normal text: Fail
AAA large text: Fail

Calculated tints and shades

Tints mix the color with white; shades mix it with black in sRGB.

Tints

Shades

Hue-wheel relationships

These colors keep the original HSL saturation and lightness while rotating hue. They are mathematical starting points, not automatic design recommendations.

Opacity variants

Eight-digit HEX and modern rgb() alpha syntax for the same opacity.

20%

40%

60%

80%

CSS starter

A small custom-property block using the calculated foreground with the stronger black-or-white contrast.

--color-ant-grey-6: #666666;
--color-ant-grey-6-rgb: 102 102 102;
--color-ant-grey-6-hsl: 0 0% 40%;
color: #FFFFFF;
background-color: var(--color-ant-grey-6);

Community review

Suggest a correction

Correction for Medium dark grey — Ant grey 6#666666

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08 / Verification

Where the values come from

The color name and HEX value are checked against the cited standard. RGB, HSL, HWB, luminance, and contrast are then calculated from that HEX value using published formulas.

Source for the name and HEX: @ant-design/colors preset palettes
License: MIT License
Version: @ant-design/colors 8.0.1

Continue with a method

Put this color in context

Use these reviewed guides to move from a single value to accessible, reproducible interface decisions.

9 min read Choosing link colors that remain distinguishableRead guide → 10 min read Button colors: text, fill, border, hover, and focusRead guide → 12 min read How to choose a readable text color for any backgroundRead guide →