#55B31B#55B31B

#55B31B is a light, vivid yellow-green. Relative luminance 0.343; OKLCH L 68.2% C 0.198 H 137.1°. Best body text is #000000 at 7.85:1 contrast (WCAG AA passes).

Color values

HEX	#55B31B
RGB	rgb(85, 179, 27)
HSL	hsl(97, 74%, 40%)
HSV	hsv(97, 85%, 70%)
CMYK	cmyk(52.5%, 0%, 84.9%, 29.8%)
CIE-LAB	lab(65.16, -52.12, 61.41)
CIE-LCH	lch(65.16, 80.54, 130.32°)
OKLab	oklab(68.24% -0.1449 0.1346)
OKLCH	oklch(68.24% 0.198 137.1)
XYZ	xyz(20.0636, 34.2491, 6.5902)
Luminance	0.3425 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#55B31B #791BB3

analogous

#A1B31B #55B31B #1BB32D

triadic

#55B31B #1B55B3 #B31B55

tetradic

#55B31B #1BA1B3 #791BB3 #B32D1B

square

#55B31B #1BA1B3 #791BB3 #B32D1B

split-complementary

#55B31B #2D1BB3 #B31BA1

monochromatic

#22490B #3C7E13 #55B31B #70DF2C #94E761

Accessibility & contrast

On white

2.68

#55B31B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.85

#55B31B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #55B31B

7.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##55B31B	#FFFFFF	#000000	##000000
##55B31B	1.00	2.68	7.85	7.85
#FFFFFF	2.68	1.00	21.00	21.00
#000000	7.85	21.00	1.00	1.00
##000000	7.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B9A300

Deuteranopia (green-blind)

#AD9B2F

Tritanopia (blue-blind)

#4FAC98

Achromatopsia (no color)

#9E9E9E

Design tokens & code

CSS

--color: #55b31b;
/* rgb */ color: rgb(85, 179, 27);
/* oklch */ color: oklch(68.2% 0.198 137.1);

Tailwind

colors: {
  custom: {
    50: '#8fca68',
    500: '#55b31b',
    950: '#000000',
  },
}

SCSS

$custom: #55b31b;
$custom-light: #8fca68;
$custom-dark: #000000;

JSON

{
  "hex": "#55b31b",
  "rgb": {
    "r": 85,
    "g": 179,
    "b": 27
  },
  "hsl": {
    "h": 97.105,
    "s": 73.786,
    "l": 40.392
  },
  "oklch": {
    "l": 0.68243,
    "c": 0.19774,
    "h": 137.1
  },
  "luminance": 0.34251
}

Semantic roles & 50–950 ramp

primary

#55B31B

secondary

#A25ECC

accent

#37F0AA

background

#F9FCF6

surface

#F2F8EB

border

#CCD1C6

text

#0D1307

muted

#7E827A

Preview Lab

Preview with #55B31B

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

Preview Lab → · Contrast checker → · Palette generator →