#51791B#51791B

#51791B is a mid, vivid yellow-green. Relative luminance 0.155; OKLCH L 52.7% C 0.129 H 130.3°. Best body text is #FFFFFF at 5.12:1 contrast (WCAG AA passes).

Color values

HEX	#51791B
RGB	rgb(81, 121, 27)
HSL	hsl(86, 64%, 29%)
HSV	hsv(86, 78%, 47%)
CMYK	cmyk(33.1%, 0%, 77.7%, 52.5%)
CIE-LAB	lab(46.32, -29.23, 43.97)
CIE-LCH	lch(46.32, 52.80, 123.62°)
OKLab	oklab(52.74% -0.0831 0.098)
OKLCH	oklch(52.74% 0.129 130.3)
XYZ	xyz(10.4285, 15.5029, 3.4796)
Luminance	0.1550 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51791B #431B79

analogous

#79721B #51791B #22791B

triadic

#51791B #1B5179 #791B51

tetradic

#51791B #1B7972 #431B79 #791B22

square

#51791B #1B7972 #431B79 #791B22

split-complementary

#51791B #1B2279 #721B79

monochromatic

#111906 #304710 #51791B #72AB26 #93D33B

Accessibility & contrast

On white

5.12

#51791B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.10

#51791B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #51791B

5.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51791B	#FFFFFF	#000000	##FFFFFF
##51791B	1.00	5.12	4.10	5.12
#FFFFFF	5.12	1.00	21.00	1.00
#000000	4.10	21.00	1.00	21.00
##FFFFFF	5.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#7F7007

Deuteranopia (green-blind)

#796D24

Tritanopia (blue-blind)

#537467

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #51791b;
/* rgb */ color: rgb(81, 121, 27);
/* oklch */ color: oklch(52.7% 0.129 130.3);

Tailwind

colors: {
  custom: {
    50: '#86a05f',
    500: '#51791b',
    950: '#000000',
  },
}

SCSS

$custom: #51791b;
$custom-light: #86a05f;
$custom-dark: #000000;

JSON

{
  "hex": "#51791b",
  "rgb": {
    "r": 81,
    "g": 121,
    "b": 27
  },
  "hsl": {
    "h": 85.532,
    "s": 63.514,
    "l": 29.02
  },
  "oklch": {
    "l": 0.52735,
    "c": 0.1285,
    "h": 130.3
  },
  "luminance": 0.15503
}

Semantic roles & 50–950 ramp

primary

#51791B

secondary

#7043AD

accent

#41E788

background

#F8F9F5

surface

#F0F2EA

border

#CBCCC6

text

#0B0E05

muted

#7C7E79

Preview Lab

Preview with #51791B

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

Preview Lab → · Contrast checker → · Palette generator →