#645A13#645A13

#645A13 is a mid, moderate yellow. Relative luminance 0.101; OKLCH L 46.4% C 0.088 H 100.9°. Best body text is #FFFFFF at 6.97:1 contrast (WCAG AA passes).

Color values

HEX	#645A13
RGB	rgb(100, 90, 19)
HSL	hsl(53, 68%, 23%)
HSV	hsv(53, 81%, 39%)
CMYK	cmyk(0%, 10%, 81%, 60.8%)
CIE-LAB	lab(37.97, -4.47, 39.55)
CIE-LCH	lch(37.97, 39.80, 96.44°)
OKLab	oklab(46.37% -0.0167 0.0865)
OKLCH	oklch(46.37% 0.088 100.9)
XYZ	xyz(9.0297, 10.0691, 2.0839)
Luminance	0.1007 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645A13 #131D64

analogous

#643113 #645A13 #456413

triadic

#645A13 #13645A #5A1364

tetradic

#645A13 #136431 #131D64 #641345

square

#645A13 #136431 #131D64 #641345

split-complementary

#645A13 #134564 #311364

monochromatic

#1A1705 #312C09 #645A13 #97881D #CBB727

Accessibility & contrast

On white

6.97

#645A13 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.01

#645A13 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645A13

6.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645A13	#FFFFFF	#000000	##FFFFFF
##645A13	1.00	6.97	3.01	6.97
#FFFFFF	6.97	1.00	21.00	1.00
#000000	3.01	21.00	1.00	21.00
##FFFFFF	6.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#635705

Deuteranopia (green-blind)

#665B18

Tritanopia (blue-blind)

#6C534D

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #645a13;
/* rgb */ color: rgb(100, 90, 19);
/* oklch */ color: oklch(46.4% 0.088 100.9);

Tailwind

colors: {
  custom: {
    50: '#938857',
    500: '#645a13',
    950: '#000000',
  },
}

SCSS

$custom: #645a13;
$custom-light: #938857;
$custom-dark: #000000;

JSON

{
  "hex": "#645a13",
  "rgb": {
    "r": 100,
    "g": 90,
    "b": 19
  },
  "hsl": {
    "h": 52.593,
    "s": 68.067,
    "l": 23.333
  },
  "oklch": {
    "l": 0.46371,
    "c": 0.08811,
    "h": 100.9
  },
  "luminance": 0.10069
}

Semantic roles & 50–950 ramp

primary

#645A13

secondary

#37449C

accent

#52EB3D

background

#F9F8F5

surface

#F2EFE9

border

#CCCAC5

text

#0D0B03

muted

#7E7C78

Preview Lab

Preview with #645A13

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

Preview Lab → · Contrast checker → · Palette generator →