#4FB31C#4FB31C

#4FB31C is a light, highly saturated yellow-green. Relative luminance 0.340; OKLCH L 68.0% C 0.200 H 138.1°. Best body text is #000000 at 7.80:1 contrast (WCAG AA passes).

Color values

HEX	#4FB31C
RGB	rgb(79, 179, 28)
HSL	hsl(100, 73%, 41%)
HSV	hsv(100, 84%, 70%)
CMYK	cmyk(55.9%, 0%, 84.4%, 29.8%)
CIE-LAB	lab(64.95, -53.76, 60.90)
CIE-LCH	lch(64.95, 81.23, 131.44°)
OKLab	oklab(68.01% -0.1489 0.1337)
OKLCH	oklch(68.01% 0.2 138.1)
XYZ	xyz(19.5534, 33.9847, 6.6277)
Luminance	0.3399 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4FB31C #801CB3

analogous

#9AB31C #4FB31C #1CB334

triadic

#4FB31C #1C4FB3 #B31C4F

tetradic

#4FB31C #1C9AB3 #801CB3 #B3341C

square

#4FB31C #1C9AB3 #801CB3 #B3341C

split-complementary

#4FB31C #341CB3 #B31C9A

monochromatic

#20490B #387E14 #4FB31C #69DE2E #8FE763

Accessibility & contrast

On white

2.69

#4FB31C on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.80

#4FB31C on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #4FB31C

7.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4FB31C	#FFFFFF	#000000	##000000
##4FB31C	1.00	2.69	7.80	7.80
#FFFFFF	2.69	1.00	21.00	21.00
#000000	7.80	21.00	1.00	1.00
##000000	7.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B9A300

Deuteranopia (green-blind)

#AC9B30

Tritanopia (blue-blind)

#46AC98

Achromatopsia (no color)

#9E9E9E

Design tokens & code

CSS

--color: #4fb31c;
/* rgb */ color: rgb(79, 179, 28);
/* oklch */ color: oklch(68.0% 0.200 138.1);

Tailwind

colors: {
  custom: {
    50: '#8ccb68',
    500: '#4fb31c',
    950: '#000000',
  },
}

SCSS

$custom: #4fb31c;
$custom-light: #8ccb68;
$custom-dark: #000000;

JSON

{
  "hex": "#4fb31c",
  "rgb": {
    "r": 79,
    "g": 179,
    "b": 28
  },
  "hsl": {
    "h": 99.735,
    "s": 72.947,
    "l": 40.588
  },
  "oklch": {
    "l": 0.68012,
    "c": 0.2001,
    "h": 138.1
  },
  "luminance": 0.33986
}

Semantic roles & 50–950 ramp

primary

#4FB31C

secondary

#A75FCB

accent

#38F0B2

background

#F9FCF6

surface

#F1F8EB

border

#CBD1C6

text

#0D1307

muted

#7E827A

Preview Lab

Preview with #4FB31C

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

Preview Lab → · Contrast checker → · Palette generator →