#637018#637018

#637018 is a mid, moderate yellow. Relative luminance 0.143; OKLCH L 51.7% C 0.110 H 117.9°. Best body text is #FFFFFF at 5.44:1 contrast (WCAG AA passes).

Color values

HEX	#637018
RGB	rgb(99, 112, 24)
HSL	hsl(69, 65%, 27%)
HSV	hsv(69, 79%, 44%)
CMYK	cmyk(11.6%, 0%, 78.6%, 56.1%)
CIE-LAB	lab(44.67, -17.07, 43.93)
CIE-LCH	lch(44.67, 47.13, 111.24°)
OKLab	oklab(51.72% -0.0513 0.0969)
OKLCH	oklch(51.72% 0.11 117.9)
XYZ	xyz(11.1049, 14.3070, 3.0405)
Luminance	0.1431 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#637018 #251870

analogous

#705118 #637018 #377018

triadic

#637018 #186370 #701863

tetradic

#637018 #187051 #251870 #701837

square

#637018 #187051 #251870 #701837

split-complementary

#637018 #183770 #511870

monochromatic

#161905 #363E0D #637018 #90A223 #BBD330

Accessibility & contrast

On white

5.44

#637018 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.86

#637018 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #637018

5.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##637018	#FFFFFF	#000000	##FFFFFF
##637018	1.00	5.44	3.86	5.44
#FFFFFF	5.44	1.00	21.00	1.00
#000000	3.86	21.00	1.00	21.00
##FFFFFF	5.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#786904

Deuteranopia (green-blind)

#776A20

Tritanopia (blue-blind)

#69695F

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #637018;
/* rgb */ color: rgb(99, 112, 24);
/* oklch */ color: oklch(51.7% 0.110 117.9);

Tailwind

colors: {
  custom: {
    50: '#92995d',
    500: '#637018',
    950: '#000000',
  },
}

SCSS

$custom: #637018;
$custom-light: #92995d;
$custom-dark: #000000;

JSON

{
  "hex": "#637018",
  "rgb": {
    "r": 99,
    "g": 112,
    "b": 24
  },
  "hsl": {
    "h": 68.864,
    "s": 64.706,
    "l": 26.667
  },
  "oklch": {
    "l": 0.51718,
    "c": 0.10959,
    "h": 117.9
  },
  "luminance": 0.14307
}

Semantic roles & 50–950 ramp

primary

#637018

secondary

#4E3EA5

accent

#40E859

background

#F9F9F5

surface

#F2F2E9

border

#CCCCC5

text

#0D0D04

muted

#7E7E79

Preview Lab

Preview with #637018

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →