#3f4037

Color #3f4037

A nearly neutral, gray-leaning dark yellow.

Closest named color Charcoal #36454f · ΔE 13.46 Nearest Tailwind class olive-700 #474739 · ΔE 3.3

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Conversions

HEX

#3f4037

RGB

rgb(63, 64, 55)

HSL

hsl(66.7, 7.6%, 23.3%)

HSV / HSB

hsv(66.7, 14.1%, 25.1%)

CMYK

cmyk(1.6%, 0%, 14.1%, 74.9%)

LAB

lab(26.73, -2.34, 5.37)

LCH

lch(26.73, 5.86, 113.55)

OKLCH

oklch(36.8%, 0.015, 112.3)

HWB

hwb(66.7, 21.6%, 74.9%)

Harmony colors

Complementary

#383740

Analogous

#403c37

#3f4037

#3a4037

Triadic

#3f4037

#373f40

#40373f

Split-complementary

#3f4037

#373a40

#3c3740

Tetradic

#3f4037

#374038

#383740

#40373f

Square

#3f4037

#37403c

#383740

#40373a

Shades

Color #3f4037 mixed toward black.

#34352e

#2a2b25

#1f201b

#151512

#0a0b09

Tints

Color #3f4037 mixed toward white.

#616355

#848673

#a3a596

#c2c3b9

#e0e1dc

Tones

Color #3f4037 mixed toward gray.

#3e3f38

#3e3e38

#3d3e39

#3d3d3a

#3c3c3b

Accessibility

Aa White text on this color

10.5:1

Aa Black text on this color

2:1

White text reads better on this background (10.5:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#3f3f39 · ΔE 1.9

Deuteranopia

#3f3f3a · ΔE 2.4

Tritanopia

#3f3b3b · ΔE 7.3

Achromatopsia

#3f3f3f · ΔE 5.6

Left half is the original, right half is the simulated appearance. See all 8 vision types →

Code

CSS

background-color: #3f4037;

Tailwind (arbitrary value)

bg-[#3f4037]

Related colors

Ivory #fffff0

Beige #f5f5dc

Light Goldenrod Yellow #fafad2

Light Yellow #ffffe0

Olive #808000

Yellow #ffff00

Frequently asked questions

#3f4037 (#3f4037) is rgb(63, 64, 55) in RGB.

No, #3f4037 is not web-safe. The nearest web-safe colors are among its tones and shades below.

Related tools

Colors

HEX to RGB Converter

Convert any HEX color code to its RGB and HSL equivalents, live, with copy-to-clipboard values.

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Contrast Checker

Check the WCAG contrast ratio between any two colors, live, with AA/AAA pass-fail results.

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Palette Generator

Generate complementary, analogous, triadic, split-complementary, tetradic, square, and monochromatic palettes from any base color.

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Build something with this color

Generate a full palette from #3f4037, or check how it holds up for accessibility.

Generate a palette → Check contrast