#637311#637311

#637311 is a mid, moderate yellow. Relative luminance 0.150; OKLCH L 52.4% C 0.117 H 119.2°. Best body text is #FFFFFF at 5.26:1 contrast (WCAG AA passes).

Color values

HEX	#637311
RGB	rgb(99, 115, 17)
HSL	hsl(70, 74%, 26%)
HSV	hsv(70, 85%, 45%)
CMYK	cmyk(13.9%, 0%, 85.2%, 54.9%)
CIE-LAB	lab(45.57, -18.98, 47.00)
CIE-LCH	lch(45.57, 50.69, 111.99°)
OKLab	oklab(52.43% -0.0571 0.1021)
OKLCH	oklch(52.43% 0.117 119.2)
XYZ	xyz(11.3778, 14.9547, 2.8174)
Luminance	0.1495 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#637311 #211173

analogous

#735211 #637311 #327311

triadic

#637311 #116373 #731163

tetradic

#637311 #117352 #211173 #731132

square

#637311 #117352 #211173 #731132

split-complementary

#637311 #113273 #521173

monochromatic

#171B04 #353E09 #637311 #91A819 #BFDE21

Accessibility & contrast

On white

5.26

#637311 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.99

#637311 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #637311

5.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##637311	#FFFFFF	#000000	##FFFFFF
##637311	1.00	5.26	3.99	5.26
#FFFFFF	5.26	1.00	21.00	1.00
#000000	3.99	21.00	1.00	21.00
##FFFFFF	5.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#7B6C00

Deuteranopia (green-blind)

#796C1C

Tritanopia (blue-blind)

#696C61

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #637311;
/* rgb */ color: rgb(99, 115, 17);
/* oklch */ color: oklch(52.4% 0.117 119.2);

Tailwind

colors: {
  custom: {
    50: '#939b5a',
    500: '#637311',
    950: '#000000',
  },
}

SCSS

$custom: #637311;
$custom-light: #939b5a;
$custom-dark: #000000;

JSON

{
  "hex": "#637311",
  "rgb": {
    "r": 99,
    "g": 115,
    "b": 17
  },
  "hsl": {
    "h": 69.796,
    "s": 74.242,
    "l": 25.882
  },
  "oklch": {
    "l": 0.52433,
    "c": 0.11695,
    "h": 119.2
  },
  "luminance": 0.14955
}

Semantic roles & 50–950 ramp

primary

#637311

secondary

#4936AA

accent

#37F155

background

#F9F9F5

surface

#F2F2E9

border

#CCCCC5

text

#0D0E04

muted

#7E7E79

Preview Lab

Preview with #637311

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

Preview Lab → · Contrast checker → · Palette generator →