#665B1B#665B1B

#665B1B is a mid, moderate yellow. Relative luminance 0.104; OKLCH L 46.9% C 0.083 H 99.3°. Best body text is #FFFFFF at 6.82:1 contrast (WCAG AA passes).

Color values

HEX	#665B1B
RGB	rgb(102, 91, 27)
HSL	hsl(51, 58%, 25%)
HSV	hsv(51, 74%, 40%)
CMYK	cmyk(0%, 10.8%, 73.5%, 60%)
CIE-LAB	lab(38.53, -3.65, 36.83)
CIE-LCH	lch(38.53, 37.01, 95.67°)
OKLab	oklab(46.88% -0.0135 0.0823)
OKLCH	oklch(46.88% 0.083 99.3)
XYZ	xyz(9.4188, 10.3865, 2.5454)
Luminance	0.1039 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665B1B #1B2666

analogous

#66351B #665B1B #4B661B

triadic

#665B1B #1B665B #5B1B66

tetradic

#665B1B #1B6635 #1B2666 #661B4B

square

#665B1B #1B6635 #1B2666 #661B4B

split-complementary

#665B1B #1B4B66 #351B66

monochromatic

#181606 #36300E #665B1B #968628 #C7B135

Accessibility & contrast

On white

6.82

#665B1B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.08

#665B1B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665B1B

6.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665B1B	#FFFFFF	#000000	##FFFFFF
##665B1B	1.00	6.82	3.08	6.82
#FFFFFF	6.82	1.00	21.00	1.00
#000000	3.08	21.00	1.00	21.00
##FFFFFF	6.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#645812

Deuteranopia (green-blind)

#675C1F

Tritanopia (blue-blind)

#6E544E

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #665b1b;
/* rgb */ color: rgb(102, 91, 27);
/* oklch */ color: oklch(46.9% 0.083 99.3);

Tailwind

colors: {
  custom: {
    50: '#94895c',
    500: '#665b1b',
    950: '#000000',
  },
}

SCSS

$custom: #665b1b;
$custom-light: #94895c;
$custom-dark: #000000;

JSON

{
  "hex": "#665b1b",
  "rgb": {
    "r": 102,
    "g": 91,
    "b": 27
  },
  "hsl": {
    "h": 51.2,
    "s": 58.14,
    "l": 25.294
  },
  "oklch": {
    "l": 0.46883,
    "c": 0.08345,
    "h": 99.3
  },
  "luminance": 0.10386
}

Semantic roles & 50–950 ramp

primary

#665B1B

secondary

#414F9B

accent

#5DE146

background

#F9F8F5

surface

#F2EFE9

border

#CCCAC5

text

#0E0B04

muted

#7E7C79

Preview Lab

Preview with #665B1B

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

Preview Lab → · Contrast checker → · Palette generator →