#40450B#40450B

#40450B is a dark, moderate yellow. Relative luminance 0.054; OKLCH L 37.4% C 0.077 H 114.5°. Best body text is #FFFFFF at 10.13:1 contrast (WCAG AA passes).

Color values

HEX	#40450B
RGB	rgb(64, 69, 11)
HSL	hsl(65, 73%, 16%)
HSV	hsv(65, 84%, 27%)
CMYK	cmyk(7.2%, 0%, 84.1%, 72.9%)
CIE-LAB	lab(27.77, -10.44, 31.88)
CIE-LCH	lch(27.77, 33.54, 108.14°)
OKLab	oklab(37.37% -0.032 0.0701)
OKLCH	oklch(37.37% 0.077 114.5)
XYZ	xyz(4.3030, 5.3705, 1.1265)
Luminance	0.0537 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40450B #100B45

analogous

#452D0B #40450B #23450B

triadic

#40450B #0B4045 #450B40

tetradic

#40450B #0B452D #100B45 #450B23

square

#40450B #0B452D #100B45 #450B23

split-complementary

#40450B #0B2345 #2D0B45

monochromatic

#181A04 #181A04 #40450B #717A13 #A2AF1C

Accessibility & contrast

On white

10.13

#40450B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#40450B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40450B

10.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40450B	#FFFFFF	#000000	##FFFFFF
##40450B	1.00	10.13	2.07	10.13
#FFFFFF	10.13	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B4102

Deuteranopia (green-blind)

#4A4210

Tritanopia (blue-blind)

#45403A

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #40450b;
/* rgb */ color: rgb(64, 69, 11);
/* oklch */ color: oklch(37.4% 0.077 114.5);

Tailwind

colors: {
  custom: {
    50: '#77784f',
    500: '#40450b',
    950: '#000000',
  },
}

SCSS

$custom: #40450b;
$custom-light: #77784f;
$custom-dark: #000000;

JSON

{
  "hex": "#40450b",
  "rgb": {
    "r": 64,
    "g": 69,
    "b": 11
  },
  "hsl": {
    "h": 65.172,
    "s": 72.5,
    "l": 15.686
  },
  "oklch": {
    "l": 0.37371,
    "c": 0.07707,
    "h": 114.5
  },
  "luminance": 0.0537
}

Semantic roles & 50–950 ramp

primary

#40450B

secondary

#322A81

accent

#39EF48

background

#F7F7F4

surface

#EDEDE7

border

#C8C8C3

text

#090902

muted

#7B7B78

Preview Lab

Preview with #40450B

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

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