#645A15#645A15

#645A15 is a mid, moderate yellow. Relative luminance 0.101; OKLCH L 46.4% C 0.087 H 100.7°. Best body text is #FFFFFF at 6.96:1 contrast (WCAG AA passes).

Color values

HEX	#645A15
RGB	rgb(100, 90, 21)
HSL	hsl(52, 65%, 24%)
HSV	hsv(52, 79%, 39%)
CMYK	cmyk(0%, 10%, 79%, 60.8%)
CIE-LAB	lab(37.98, -4.37, 38.78)
CIE-LCH	lch(37.98, 39.02, 96.43°)
OKLab	oklab(46.39% -0.0162 0.0853)
OKLCH	oklch(46.39% 0.087 100.7)
XYZ	xyz(9.0475, 10.0762, 2.1777)
Luminance	0.1008 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645A15 #151F64

analogous

#643215 #645A15 #466415

triadic

#645A15 #15645A #5A1564

tetradic

#645A15 #156432 #151F64 #641546

square

#645A15 #156432 #151F64 #641546

split-complementary

#645A15 #154664 #321564

monochromatic

#191705 #312C0A #645A15 #978820 #C9B52A

Accessibility & contrast

On white

6.96

#645A15 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.02

#645A15 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645A15

6.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645A15	#FFFFFF	#000000	##FFFFFF
##645A15	1.00	6.96	3.02	6.96
#FFFFFF	6.96	1.00	21.00	1.00
#000000	3.02	21.00	1.00	21.00
##FFFFFF	6.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#635708

Deuteranopia (green-blind)

#665B1A

Tritanopia (blue-blind)

#6C534D

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #645a15;
/* rgb */ color: rgb(100, 90, 21);
/* oklch */ color: oklch(46.4% 0.087 100.7);

Tailwind

colors: {
  custom: {
    50: '#938858',
    500: '#645a15',
    950: '#000000',
  },
}

SCSS

$custom: #645a15;
$custom-light: #938858;
$custom-dark: #000000;

JSON

{
  "hex": "#645a15",
  "rgb": {
    "r": 100,
    "g": 90,
    "b": 21
  },
  "hsl": {
    "h": 52.405,
    "s": 65.289,
    "l": 23.725
  },
  "oklch": {
    "l": 0.46385,
    "c": 0.08684,
    "h": 100.7
  },
  "luminance": 0.10076
}

Semantic roles & 50–950 ramp

primary

#645A15

secondary

#3A469B

accent

#55E840

background

#F9F8F5

surface

#F2EFE9

border

#CCCAC5

text

#0D0B04

muted

#7E7C79

Preview Lab

Preview with #645A15

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

Preview Lab → · Contrast checker → · Palette generator →