#42430B#42430B

#42430B is a dark, moderate yellow. Relative luminance 0.052; OKLCH L 37.0% C 0.074 H 110.6°. Best body text is #FFFFFF at 10.30:1 contrast (WCAG AA passes).

Color values

HEX	#42430B
RGB	rgb(66, 67, 11)
HSL	hsl(61, 72%, 15%)
HSV	hsv(61, 84%, 26%)
CMYK	cmyk(1.5%, 0%, 83.6%, 73.7%)
CIE-LAB	lab(27.29, -8.23, 31.50)
CIE-LCH	lch(27.29, 32.56, 104.64°)
OKLab	oklab(37.04% -0.026 0.0692)
OKLCH	oklch(37.04% 0.074 110.6)
XYZ	xyz(4.3145, 5.1968, 1.0924)
Luminance	0.0520 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42430B #0C0B43

analogous

#43280B #42430B #26430B

triadic

#42430B #0B4243 #430B42

tetradic

#42430B #0B4328 #0C0B43 #430B26

square

#42430B #0B4328 #0C0B43 #430B26

split-complementary

#42430B #0B2643 #280B43

monochromatic

#1A1A04 #1A1A04 #42430B #767814 #AAAC1C

Accessibility & contrast

On white

10.30

#42430B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#42430B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42430B

10.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42430B	#FFFFFF	#000000	##FFFFFF
##42430B	1.00	10.30	2.04	10.30
#FFFFFF	10.30	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#494002

Deuteranopia (green-blind)

#4A4110

Tritanopia (blue-blind)

#473E38

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #42430b;
/* rgb */ color: rgb(66, 67, 11);
/* oklch */ color: oklch(37.0% 0.074 110.6);

Tailwind

colors: {
  custom: {
    50: '#79764f',
    500: '#42430b',
    950: '#000000',
  },
}

SCSS

$custom: #42430b;
$custom-light: #79764f;
$custom-dark: #000000;

JSON

{
  "hex": "#42430b",
  "rgb": {
    "r": 66,
    "g": 67,
    "b": 11
  },
  "hsl": {
    "h": 61.071,
    "s": 71.795,
    "l": 15.294
  },
  "oklch": {
    "l": 0.37035,
    "c": 0.07393,
    "h": 110.6
  },
  "luminance": 0.05197
}

Semantic roles & 50–950 ramp

primary

#42430B

secondary

#2C2A80

accent

#39EF3D

background

#F7F7F4

surface

#EEEDE7

border

#C9C8C3

text

#090802

muted

#7B7B78

Preview Lab

Preview with #42430B

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

Preview Lab → · Contrast checker → · Palette generator →