#42571B#42571B

#42571B is a dark, moderate yellow-green. Relative luminance 0.081; OKLCH L 42.6% C 0.089 H 126.4°. Best body text is #FFFFFF at 8.04:1 contrast (WCAG AA passes).

Color values

HEX	#42571B
RGB	rgb(66, 87, 27)
HSL	hsl(81, 53%, 22%)
HSV	hsv(81, 69%, 34%)
CMYK	cmyk(24.1%, 0%, 69%, 65.9%)
CIE-LAB	lab(34.09, -18.48, 31.22)
CIE-LCH	lch(34.09, 36.28, 120.62°)
OKLab	oklab(42.55% -0.0527 0.0715)
OKLCH	oklch(42.55% 0.089 126.4)
XYZ	xyz(5.8528, 8.0537, 2.2829)
Luminance	0.0805 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42571B #301B57

analogous

#574E1B #42571B #24571B

triadic

#42571B #1B4257 #571B42

tetradic

#42571B #1B574E #301B57 #571B24

square

#42571B #1B574E #301B57 #571B24

split-complementary

#42571B #1B2457 #4E1B57

monochromatic

#121707 #1F280D #42571B #658629 #89B438

Accessibility & contrast

On white

8.04

#42571B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.61

#42571B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42571B

8.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42571B	#FFFFFF	#000000	##FFFFFF
##42571B	1.00	8.04	2.61	8.04
#FFFFFF	8.04	1.00	21.00	1.00
#000000	2.61	21.00	1.00	21.00
##FFFFFF	8.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C5113

Deuteranopia (green-blind)

#59501F

Tritanopia (blue-blind)

#45534B

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #42571b;
/* rgb */ color: rgb(66, 87, 27);
/* oklch */ color: oklch(42.6% 0.089 126.4);

Tailwind

colors: {
  custom: {
    50: '#78865b',
    500: '#42571b',
    950: '#000000',
  },
}

SCSS

$custom: #42571b;
$custom-light: #78865b;
$custom-dark: #000000;

JSON

{
  "hex": "#42571b",
  "rgb": {
    "r": 66,
    "g": 87,
    "b": 27
  },
  "hsl": {
    "h": 81,
    "s": 52.632,
    "l": 22.353
  },
  "oklch": {
    "l": 0.42554,
    "c": 0.08884,
    "h": 126.4
  },
  "luminance": 0.08054
}

Semantic roles & 50–950 ramp

primary

#42571B

secondary

#5C418D

accent

#4CDC7E

background

#F7F8F5

surface

#EDEFE9

border

#C8CAC5

text

#090B04

muted

#7B7C79

Preview Lab

Preview with #42571B

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

Preview Lab → · Contrast checker → · Palette generator →