#51661B#51661B

#51661B is a mid, moderate yellow-green. Relative luminance 0.113; OKLCH L 47.7% C 0.103 H 123.9°. Best body text is #FFFFFF at 6.43:1 contrast (WCAG AA passes).

Color values

HEX	#51661B
RGB	rgb(81, 102, 27)
HSL	hsl(77, 58%, 25%)
HSV	hsv(77, 74%, 40%)
CMYK	cmyk(20.6%, 0%, 73.5%, 60%)
CIE-LAB	lab(40.13, -19.74, 37.86)
CIE-LCH	lch(40.13, 42.70, 117.54°)
OKLab	oklab(47.72% -0.0572 0.0852)
OKLCH	oklch(47.72% 0.103 123.9)
XYZ	xyz(8.3426, 11.3311, 2.7843)
Luminance	0.1133 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51661B #301B66

analogous

#66551B #51661B #2B661B

triadic

#51661B #1B5166 #661B51

tetradic

#51661B #1B6655 #301B66 #661B2B

square

#51661B #1B6655 #301B66 #661B2B

split-complementary

#51661B #1B2B66 #551B66

monochromatic

#131806 #2B360E #51661B #779628 #9EC735

Accessibility & contrast

On white

6.43

#51661B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.27

#51661B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #51661B

6.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51661B	#FFFFFF	#000000	##FFFFFF
##51661B	1.00	6.43	3.27	6.43
#FFFFFF	6.43	1.00	21.00	1.00
#000000	3.27	21.00	1.00	21.00
##FFFFFF	6.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6C5F0F

Deuteranopia (green-blind)

#695E21

Tritanopia (blue-blind)

#556157

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #51661b;
/* rgb */ color: rgb(81, 102, 27);
/* oklch */ color: oklch(47.7% 0.103 123.9);

Tailwind

colors: {
  custom: {
    50: '#84915d',
    500: '#51661b',
    950: '#000000',
  },
}

SCSS

$custom: #51661b;
$custom-light: #84915d;
$custom-dark: #000000;

JSON

{
  "hex": "#51661b",
  "rgb": {
    "r": 81,
    "g": 102,
    "b": 27
  },
  "hsl": {
    "h": 76.8,
    "s": 58.14,
    "l": 25.294
  },
  "oklch": {
    "l": 0.47717,
    "c": 0.10259,
    "h": 123.9
  },
  "luminance": 0.11331
}

Semantic roles & 50–950 ramp

primary

#51661B

secondary

#5B419B

accent

#46E172

background

#F8F8F5

surface

#EFF0E9

border

#CACBC5

text

#0B0C04

muted

#7C7D79

Preview Lab

Preview with #51661B

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

Preview Lab → · Contrast checker → · Palette generator →