#645F18#645F18

#645F18 is a mid, moderate yellow. Relative luminance 0.110; OKLCH L 47.6% C 0.090 H 105.3°. Best body text is #FFFFFF at 6.58:1 contrast (WCAG AA passes).

Color values

HEX	#645F18
RGB	rgb(100, 95, 24)
HSL	hsl(56, 61%, 24%)
HSV	hsv(56, 76%, 39%)
CMYK	cmyk(0%, 5%, 76%, 60.8%)
CIE-LAB	lab(39.51, -7.13, 39.03)
CIE-LCH	lch(39.51, 39.68, 100.36°)
OKLab	oklab(47.61% -0.0236 0.0865)
OKLCH	oklch(47.61% 0.09 105.3)
XYZ	xyz(9.5130, 10.9601, 2.4784)
Luminance	0.1096 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645F18 #181D64

analogous

#643918 #645F18 #436418

triadic

#645F18 #18645F #5F1864

tetradic

#645F18 #186439 #181D64 #641843

square

#645F18 #186439 #181D64 #641843

split-complementary

#645F18 #184364 #391864

monochromatic

#191706 #33300C #645F18 #958E24 #C7BD30

Accessibility & contrast

On white

6.58

#645F18 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.19

#645F18 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645F18

6.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645F18	#FFFFFF	#000000	##FFFFFF
##645F18	1.00	6.58	3.19	6.58
#FFFFFF	6.58	1.00	21.00	1.00
#000000	3.19	21.00	1.00	21.00
##FFFFFF	6.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#685B0C

Deuteranopia (green-blind)

#6A5E1D

Tritanopia (blue-blind)

#6C5851

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #645f18;
/* rgb */ color: rgb(100, 95, 24);
/* oklch */ color: oklch(47.6% 0.090 105.3);

Tailwind

colors: {
  custom: {
    50: '#938c5a',
    500: '#645f18',
    950: '#000000',
  },
}

SCSS

$custom: #645f18;
$custom-light: #938c5a;
$custom-dark: #000000;

JSON

{
  "hex": "#645f18",
  "rgb": {
    "r": 100,
    "g": 95,
    "b": 24
  },
  "hsl": {
    "h": 56.053,
    "s": 61.29,
    "l": 24.314
  },
  "oklch": {
    "l": 0.47611,
    "c": 0.08965,
    "h": 105.3
  },
  "luminance": 0.1096
}

Semantic roles & 50–950 ramp

primary

#645F18

secondary

#3E449A

accent

#4EE443

background

#F9F8F5

surface

#F2F0E9

border

#CCCBC5

text

#0D0C04

muted

#7E7D79

Preview Lab

Preview with #645F18

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

Preview Lab → · Contrast checker → · Palette generator →