#66A01B#66A01B

#66A01B is a light, vivid yellow-green. Relative luminance 0.280; OKLCH L 64.2% C 0.167 H 131.5°. Best body text is #000000 at 6.61:1 contrast (WCAG AA passes).

Color values

HEX	#66A01B
RGB	rgb(102, 160, 27)
HSL	hsl(86, 71%, 37%)
HSV	hsv(86, 83%, 63%)
CMYK	cmyk(36.2%, 0%, 83.1%, 37.3%)
CIE-LAB	lab(59.93, -38.84, 57.03)
CIE-LCH	lch(59.93, 69.00, 124.25°)
OKLab	oklab(64.16% -0.1104 0.125)
OKLCH	oklch(64.16% 0.167 131.5)
XYZ	xyz(18.2480, 28.0448, 5.4884)
Luminance	0.2805 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66A01B #551BA0

analogous

#A0981B #66A01B #24A01B

triadic

#66A01B #1B66A0 #A01B66

tetradic

#66A01B #1BA098 #551BA0 #A01B24

square

#66A01B #1BA098 #551BA0 #A01B24

split-complementary

#66A01B #1B24A0 #981BA0

monochromatic

#233709 #456C12 #66A01B #87D424 #A4E253

Accessibility & contrast

On white

3.18

#66A01B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.61

#66A01B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #66A01B

6.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66A01B	#FFFFFF	#000000	##000000
##66A01B	1.00	3.18	6.61	6.61
#FFFFFF	3.18	1.00	21.00	21.00
#000000	6.61	21.00	1.00	1.00
##000000	6.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A79300

Deuteranopia (green-blind)

#9F8F2B

Tritanopia (blue-blind)

#689988

Achromatopsia (no color)

#909090

Design tokens & code

CSS

--color: #66a01b;
/* rgb */ color: rgb(102, 160, 27);
/* oklch */ color: oklch(64.2% 0.167 131.5);

Tailwind

colors: {
  custom: {
    50: '#97bc65',
    500: '#66a01b',
    950: '#000000',
  },
}

SCSS

$custom: #66a01b;
$custom-light: #97bc65;
$custom-dark: #000000;

JSON

{
  "hex": "#66a01b",
  "rgb": {
    "r": 102,
    "g": 160,
    "b": 27
  },
  "hsl": {
    "h": 86.165,
    "s": 71.123,
    "l": 36.667
  },
  "oklch": {
    "l": 0.64155,
    "c": 0.16674,
    "h": 131.5
  },
  "luminance": 0.28046
}

Semantic roles & 50–950 ramp

primary

#66A01B

secondary

#8452C5

accent

#3AEE88

background

#F9FBF6

surface

#F2F6EB

border

#CCD0C6

text

#0E1206

muted

#7E817A

Preview Lab

Preview with #66A01B

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

Preview Lab → · Contrast checker → · Palette generator →