#40631B#40631B

#40631B is a mid, moderate yellow-green. Relative luminance 0.101; OKLCH L 45.7% C 0.108 H 131.8°. Best body text is #FFFFFF at 6.96:1 contrast (WCAG AA passes).

Color values

HEX	#40631B
RGB	rgb(64, 99, 27)
HSL	hsl(89, 57%, 25%)
HSV	hsv(89, 73%, 39%)
CMYK	cmyk(35.4%, 0%, 72.7%, 61.2%)
CIE-LAB	lab(38.01, -25.49, 35.32)
CIE-LCH	lch(38.01, 43.56, 125.82°)
OKLab	oklab(45.7% -0.0718 0.0802)
OKLCH	oklch(45.7% 0.108 131.8)
XYZ	xyz(6.7739, 10.0926, 2.6278)
Luminance	0.1009 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40631B #3E1B63

analogous

#63621B #40631B #1C631B

triadic

#40631B #1B4063 #631B40

tetradic

#40631B #1B6362 #3E1B63 #631B1C

square

#40631B #1B6362 #3E1B63 #631B1C

split-complementary

#40631B #1B1C63 #621B63

monochromatic

#101807 #21330E #40631B #5F9328 #7EC335

Accessibility & contrast

On white

6.96

#40631B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.02

#40631B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #40631B

6.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40631B	#FFFFFF	#000000	##FFFFFF
##40631B	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)

#675B10

Deuteranopia (green-blind)

#635921

Tritanopia (blue-blind)

#415F55

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #40631b;
/* rgb */ color: rgb(64, 99, 27);
/* oklch */ color: oklch(45.7% 0.108 131.8);

Tailwind

colors: {
  custom: {
    50: '#788f5c',
    500: '#40631b',
    950: '#000000',
  },
}

SCSS

$custom: #40631b;
$custom-light: #788f5c;
$custom-dark: #000000;

JSON

{
  "hex": "#40631b",
  "rgb": {
    "r": 64,
    "g": 99,
    "b": 27
  },
  "hsl": {
    "h": 89.167,
    "s": 57.143,
    "l": 24.706
  },
  "oklch": {
    "l": 0.45697,
    "c": 0.10764,
    "h": 131.8
  },
  "luminance": 0.10093
}

Semantic roles & 50–950 ramp

primary

#40631B

secondary

#6C4198

accent

#47E092

background

#F7F8F5

surface

#EDF0E9

border

#C8CBC5

text

#090C04

muted

#7B7D79

Preview Lab

Preview with #40631B

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

Preview Lab → · Contrast checker → · Palette generator →