#40370E#40370E

#40370E is a dark, muted yellow. Relative luminance 0.039; OKLCH L 33.7% C 0.059 H 96.6°. Best body text is #FFFFFF at 11.86:1 contrast (WCAG AA passes).

Color values

HEX	#40370E
RGB	rgb(64, 55, 14)
HSL	hsl(49, 64%, 15%)
HSV	hsv(49, 78%, 25%)
CMYK	cmyk(0%, 14.1%, 78.1%, 74.9%)
CIE-LAB	lab(23.18, -1.60, 26.07)
CIE-LCH	lch(23.18, 26.12, 93.52°)
OKLab	oklab(33.73% -0.0068 0.0585)
OKLCH	oklch(33.73% 0.059 96.6)
XYZ	xyz(3.5600, 3.8543, 0.9718)
Luminance	0.0385 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40370E #0E1740

analogous

#401E0E #40370E #30400E

triadic

#40370E #0E4037 #370E40

tetradic

#40370E #0E401E #0E1740 #400E30

square

#40370E #0E401E #0E1740 #400E30

split-complementary

#40370E #0E3040 #1E0E40

monochromatic

#191605 #191605 #40370E #726219 #A48D24

Accessibility & contrast

On white

11.86

#40370E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#40370E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40370E

11.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40370E	#FFFFFF	#000000	##FFFFFF
##40370E	1.00	11.86	1.77	11.86
#FFFFFF	11.86	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D3609

Deuteranopia (green-blind)

#403910

Tritanopia (blue-blind)

#46322F

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #40370e;
/* rgb */ color: rgb(64, 55, 14);
/* oklch */ color: oklch(33.7% 0.059 96.6);

Tailwind

colors: {
  custom: {
    50: '#776d4f',
    500: '#40370e',
    950: '#000000',
  },
}

SCSS

$custom: #40370e;
$custom-light: #776d4f;
$custom-dark: #000000;

JSON

{
  "hex": "#40370e",
  "rgb": {
    "r": 64,
    "g": 55,
    "b": 14
  },
  "hsl": {
    "h": 49.2,
    "s": 64.103,
    "l": 15.294
  },
  "oklch": {
    "l": 0.33726,
    "c": 0.05887,
    "h": 96.6
  },
  "luminance": 0.03854
}

Semantic roles & 50–950 ramp

primary

#40370E

secondary

#2F3D7B

accent

#5FE741

background

#F7F6F4

surface

#EDEBE7

border

#C8C6C3

text

#090702

muted

#7B7A78

Preview Lab

Preview with #40370E

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

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