#40510C#40510C

#40510C is a dark, moderate yellow-green. Relative luminance 0.070; OKLCH L 40.6% C 0.092 H 123.1°. Best body text is #FFFFFF at 8.75:1 contrast (WCAG AA passes).

Color values

HEX	#40510C
RGB	rgb(64, 81, 12)
HSL	hsl(75, 74%, 18%)
HSV	hsv(75, 85%, 32%)
CMYK	cmyk(21%, 0%, 85.2%, 68.2%)
CIE-LAB	lab(31.81, -17.20, 35.25)
CIE-LCH	lch(31.81, 39.23, 116.01°)
OKLab	oklab(40.63% -0.0505 0.0775)
OKLCH	oklch(40.63% 0.092 123.1)
XYZ	xyz(5.1232, 7.0014, 1.4292)
Luminance	0.0700 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40510C #1D0C51

analogous

#513F0C #40510C #1D510C

triadic

#40510C #0C4051 #510C40

tetradic

#40510C #0C513F #1D0C51 #510C1D

square

#40510C #0C513F #1D0C51 #510C1D

split-complementary

#40510C #0C1D51 #3F0C51

monochromatic

#151B04 #161C04 #40510C #6A8614 #94BC1C

Accessibility & contrast

On white

8.75

#40510C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#40510C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40510C

8.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40510C	#FFFFFF	#000000	##FFFFFF
##40510C	1.00	8.75	2.40	8.75
#FFFFFF	8.75	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#564B00

Deuteranopia (green-blind)

#544B13

Tritanopia (blue-blind)

#444C44

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #40510c;
/* rgb */ color: rgb(64, 81, 12);
/* oklch */ color: oklch(40.6% 0.092 123.1);

Tailwind

colors: {
  custom: {
    50: '#778152',
    500: '#40510c',
    950: '#000000',
  },
}

SCSS

$custom: #40510c;
$custom-light: #778152;
$custom-dark: #000000;

JSON

{
  "hex": "#40510c",
  "rgb": {
    "r": 64,
    "g": 81,
    "b": 12
  },
  "hsl": {
    "h": 74.783,
    "s": 74.194,
    "l": 18.235
  },
  "oklch": {
    "l": 0.40631,
    "c": 0.09246,
    "h": 123.1
  },
  "luminance": 0.07001
}

Semantic roles & 50–950 ramp

primary

#40510C

secondary

#442C8C

accent

#37F165

background

#F7F7F4

surface

#EDEEE7

border

#C8C9C3

text

#090A02

muted

#7B7C78

Preview Lab

Preview with #40510C

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

Preview Lab → · Contrast checker → · Palette generator →