#555B18#555B18

#555B18 is a mid, moderate yellow. Relative luminance 0.095; OKLCH L 45.2% C 0.088 H 114.4°. Best body text is #FFFFFF at 7.25:1 contrast (WCAG AA passes).

Color values

HEX	#555B18
RGB	rgb(85, 91, 24)
HSL	hsl(65, 58%, 23%)
HSV	hsv(65, 74%, 36%)
CMYK	cmyk(6.6%, 0%, 73.6%, 64.3%)
CIE-LAB	lab(36.89, -12.08, 35.98)
CIE-LCH	lch(36.89, 37.95, 108.56°)
OKLab	oklab(45.18% -0.0365 0.0806)
OKLCH	oklch(45.18% 0.088 114.4)
XYZ	xyz(7.6525, 9.4796, 2.2906)
Luminance	0.0948 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#555B18 #1E185B

analogous

#5B3F18 #555B18 #345B18

triadic

#555B18 #18555B #5B1855

tetradic

#555B18 #185B3F #1E185B #5B1834

square

#555B18 #185B3F #1E185B #5B1834

split-complementary

#555B18 #18345B #3F185B

monochromatic

#171806 #282B0B #555B18 #828B25 #AFBC32

Accessibility & contrast

On white

7.25

#555B18 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.90

#555B18 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #555B18

7.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##555B18	#FFFFFF	#000000	##FFFFFF
##555B18	1.00	7.25	2.90	7.25
#FFFFFF	7.25	1.00	21.00	1.00
#000000	2.90	21.00	1.00	21.00
##FFFFFF	7.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#62560E

Deuteranopia (green-blind)

#62571D

Tritanopia (blue-blind)

#5B554E

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #555b18;
/* rgb */ color: rgb(85, 91, 24);
/* oklch */ color: oklch(45.2% 0.088 114.4);

Tailwind

colors: {
  custom: {
    50: '#87895a',
    500: '#555b18',
    950: '#000000',
  },
}

SCSS

$custom: #555b18;
$custom-light: #87895a;
$custom-dark: #000000;

JSON

{
  "hex": "#555b18",
  "rgb": {
    "r": 85,
    "g": 91,
    "b": 24
  },
  "hsl": {
    "h": 65.373,
    "s": 58.261,
    "l": 22.549
  },
  "oklch": {
    "l": 0.45181,
    "c": 0.08847,
    "h": 114.4
  },
  "luminance": 0.09479
}

Semantic roles & 50–950 ramp

primary

#555B18

secondary

#453D92

accent

#46E154

background

#F8F8F5

surface

#F0F0E9

border

#CBCBC5

text

#0B0B04

muted

#7C7C79

Preview Lab

Preview with #555B18

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

Preview Lab → · Contrast checker → · Palette generator →