#63B41B#63B41B

#63B41B is a light, vivid yellow-green. Relative luminance 0.354; OKLCH L 69.1% C 0.192 H 134.8°. Best body text is #000000 at 8.07:1 contrast (WCAG AA passes).

Color values

HEX	#63B41B
RGB	rgb(99, 180, 27)
HSL	hsl(92, 74%, 41%)
HSV	hsv(92, 85%, 71%)
CMYK	cmyk(45%, 0%, 85%, 29.4%)
CIE-LAB	lab(66.04, -48.19, 62.40)
CIE-LCH	lch(66.04, 78.84, 127.68°)
OKLab	oklab(69.12% -0.1353 0.1364)
OKLCH	oklch(69.12% 0.192 134.8)
XYZ	xyz(21.6642, 35.3730, 6.7228)
Luminance	0.3537 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B41B #6C1BB4

analogous

#AFB41B #63B41B #1BB420

triadic

#63B41B #1B63B4 #B41B63

tetradic

#63B41B #1BAFB4 #6C1BB4 #B4201B

square

#63B41B #1BAFB4 #6C1BB4 #B4201B

split-complementary

#63B41B #201BB4 #B41BAF

monochromatic

#284A0B #467F13 #63B41B #81DF2D #A1E762

Accessibility & contrast

On white

2.60

#63B41B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.07

#63B41B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B41B

8.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B41B	#FFFFFF	#000000	##000000
##63B41B	1.00	2.60	8.07	8.07
#FFFFFF	2.60	1.00	21.00	21.00
#000000	8.07	21.00	1.00	1.00
##000000	8.07	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BBA500

Deuteranopia (green-blind)

#B09E2F

Tritanopia (blue-blind)

#61AD99

Achromatopsia (no color)

#A0A0A0

Design tokens & code

CSS

--color: #63b41b;
/* rgb */ color: rgb(99, 180, 27);
/* oklch */ color: oklch(69.1% 0.192 134.8);

Tailwind

colors: {
  custom: {
    50: '#97cb68',
    500: '#63b41b',
    950: '#000000',
  },
}

SCSS

$custom: #63b41b;
$custom-light: #97cb68;
$custom-dark: #000000;

JSON

{
  "hex": "#63b41b",
  "rgb": {
    "r": 99,
    "g": 180,
    "b": 27
  },
  "hsl": {
    "h": 91.765,
    "s": 73.913,
    "l": 40.588
  },
  "oklch": {
    "l": 0.69121,
    "c": 0.19211,
    "h": 134.8
  },
  "luminance": 0.35374
}

Semantic roles & 50–950 ramp

primary

#63B41B

secondary

#995FCC

accent

#37F199

background

#F9FCF6

surface

#F2F8EB

border

#CCD1C6

text

#0E1307

muted

#7E827A

Preview Lab

Preview with #63B41B

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

Preview Lab → · Contrast checker → · Palette generator →