#28230B#28230B

#28230B is a dark, muted yellow. Relative luminance 0.017; OKLCH L 25.5% C 0.039 H 97.7°. Best body text is #FFFFFF at 15.73:1 contrast (WCAG AA passes).

Color values

HEX	#28230B
RGB	rgb(40, 35, 11)
HSL	hsl(50, 57%, 10%)
HSV	hsv(50, 73%, 16%)
CMYK	cmyk(0%, 12.5%, 72.5%, 84.3%)
CIE-LAB	lab(13.69, -1.56, 15.61)
CIE-LCH	lch(13.69, 15.69, 95.72°)
OKLab	oklab(25.55% -0.0052 0.0388)
OKLCH	oklch(25.55% 0.039 97.7)
XYZ	xyz(1.5366, 1.6774, 0.5594)
Luminance	0.0168 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28230B #0B1028

analogous

#28140B #28230B #1F280B

triadic

#28230B #0B2823 #230B28

tetradic

#28230B #0B2814 #0B1028 #280B1F

square

#28230B #0B2814 #0B1028 #280B1F

split-complementary

#28230B #0B1F28 #140B28

monochromatic

#181507 #181507 #28230B #584D18 #887725

Accessibility & contrast

On white

15.73

#28230B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#28230B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28230B

15.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28230B	#FFFFFF	#000000	##FFFFFF
##28230B	1.00	15.73	1.34	15.73
#FFFFFF	15.73	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#272209

Deuteranopia (green-blind)

#28240C

Tritanopia (blue-blind)

#2C201E

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #28230b;
/* rgb */ color: rgb(40, 35, 11);
/* oklch */ color: oklch(25.5% 0.039 97.7);

Tailwind

colors: {
  custom: {
    50: '#635d4c',
    500: '#28230b',
    950: '#000000',
  },
}

SCSS

$custom: #28230b;
$custom-light: #635d4c;
$custom-dark: #000000;

JSON

{
  "hex": "#28230b",
  "rgb": {
    "r": 40,
    "g": 35,
    "b": 11
  },
  "hsl": {
    "h": 49.655,
    "s": 56.863,
    "l": 10
  },
  "oklch": {
    "l": 0.25546,
    "c": 0.03916,
    "h": 97.7
  },
  "luminance": 0.01677
}

Semantic roles & 50–950 ramp

primary

#28230B

secondary

#2B3564

accent

#62E048

background

#F5F5F4

surface

#EAE9E7

border

#C6C5C3

text

#050401

muted

#797977

Preview Lab

Preview with #28230B

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

Preview Lab → · Contrast checker → · Palette generator →