#42390B#42390B

#42390B is a dark, moderate yellow. Relative luminance 0.041; OKLCH L 34.4% C 0.063 H 97.7°. Best body text is #FFFFFF at 11.53:1 contrast (WCAG AA passes).

Color values

HEX	#42390B
RGB	rgb(66, 57, 11)
HSL	hsl(50, 71%, 15%)
HSV	hsv(50, 83%, 26%)
CMYK	cmyk(0%, 13.6%, 83.3%, 74.1%)
CIE-LAB	lab(24.03, -2.01, 28.40)
CIE-LCH	lch(24.03, 28.47, 94.05°)
OKLab	oklab(34.44% -0.0085 0.0627)
OKLCH	oklch(34.44% 0.063 97.7)
XYZ	xyz(3.7705, 4.1089, 0.9110)
Luminance	0.0411 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42390B #0B1442

analogous

#421E0B #42390B #2F420B

triadic

#42390B #0B4239 #390B42

tetradic

#42390B #0B421E #0B1442 #420B2F

square

#42390B #0B421E #0B1442 #420B2F

split-complementary

#42390B #0B2F42 #1E0B42

monochromatic

#1A1704 #1A1704 #42390B #766614 #AB941C

Accessibility & contrast

On white

11.53

#42390B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#42390B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42390B

11.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42390B	#FFFFFF	#000000	##FFFFFF
##42390B	1.00	11.53	1.82	11.53
#FFFFFF	11.53	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#403704

Deuteranopia (green-blind)

#423A0E

Tritanopia (blue-blind)

#483430

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #42390b;
/* rgb */ color: rgb(66, 57, 11);
/* oklch */ color: oklch(34.4% 0.063 97.7);

Tailwind

colors: {
  custom: {
    50: '#796f4e',
    500: '#42390b',
    950: '#000000',
  },
}

SCSS

$custom: #42390b;
$custom-light: #796f4e;
$custom-dark: #000000;

JSON

{
  "hex": "#42390b",
  "rgb": {
    "r": 66,
    "g": 57,
    "b": 11
  },
  "hsl": {
    "h": 50.182,
    "s": 71.429,
    "l": 15.098
  },
  "oklch": {
    "l": 0.3444,
    "c": 0.06324,
    "h": 97.7
  },
  "luminance": 0.04109
}

Semantic roles & 50–950 ramp

primary

#42390B

secondary

#2A387F

accent

#57EE3A

background

#F7F6F4

surface

#EEECE7

border

#C9C7C3

text

#090701

muted

#7B7A77

Preview Lab

Preview with #42390B

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

Preview Lab → · Contrast checker → · Palette generator →