#51891E#51891E

#51891E is a mid, vivid yellow-green. Relative luminance 0.197; OKLCH L 57.0% C 0.148 H 133.7°. Best body text is #000000 at 4.95:1 contrast (WCAG AA passes).

Color values

HEX	#51891E
RGB	rgb(81, 137, 30)
HSL	hsl(91, 64%, 33%)
HSV	hsv(91, 78%, 54%)
CMYK	cmyk(40.9%, 0%, 78.1%, 46.3%)
CIE-LAB	lab(51.53, -36.33, 47.94)
CIE-LCH	lch(51.53, 60.15, 127.16°)
OKLab	oklab(57% -0.1021 0.1068)
OKLCH	oklch(57% 0.148 133.7)
XYZ	xyz(12.5731, 19.7338, 4.3746)
Luminance	0.1973 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51891E #561E89

analogous

#86891E #51891E #1E8921

triadic

#51891E #1E5189 #891E51

tetradic

#51891E #1E8689 #561E89 #89211E

square

#51891E #1E8689 #561E89 #89211E

split-complementary

#51891E #211E89 #891E86

monochromatic

#162508 #335713 #51891E #6FBB29 #8DD74A

Accessibility & contrast

On white

4.25

#51891E on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.95

#51891E on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #51891E

4.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51891E	#FFFFFF	#000000	##000000
##51891E	1.00	4.25	4.95	4.95
#FFFFFF	4.25	1.00	21.00	21.00
#000000	4.95	21.00	1.00	1.00
##000000	4.95	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8F7E04

Deuteranopia (green-blind)

#877929

Tritanopia (blue-blind)

#518375

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #51891e;
/* rgb */ color: rgb(81, 137, 30);
/* oklch */ color: oklch(57.0% 0.148 133.7);

Tailwind

colors: {
  custom: {
    50: '#87ac63',
    500: '#51891e',
    950: '#000000',
  },
}

SCSS

$custom: #51891e;
$custom-light: #87ac63;
$custom-dark: #000000;

JSON

{
  "hex": "#51891e",
  "rgb": {
    "r": 81,
    "g": 137,
    "b": 30
  },
  "hsl": {
    "h": 91.402,
    "s": 64.072,
    "l": 32.745
  },
  "oklch": {
    "l": 0.57003,
    "c": 0.14774,
    "h": 133.7
  },
  "luminance": 0.19734
}

Semantic roles & 50–950 ramp

primary

#51891E

secondary

#8449BA

accent

#41E798

background

#F8FAF6

surface

#F0F4EB

border

#CBCEC6

text

#0C1006

muted

#7D7F7A

Preview Lab

Preview with #51891E

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

Preview Lab → · Contrast checker → · Palette generator →