#4ECC51#4ECC51

#4ECC51 is a light, vivid green. Relative luminance 0.454; OKLCH L 74.9% C 0.198 H 143.6°. Best body text is #000000 at 10.08:1 contrast (WCAG AA passes).

Color values

HEX	#4ECC51
RGB	rgb(78, 204, 81)
HSL	hsl(121, 55%, 55%)
HSV	hsv(121, 62%, 80%)
CMYK	cmyk(61.8%, 0%, 60.3%, 20%)
CIE-LAB	lab(73.15, -58.80, 50.04)
CIE-LCH	lch(73.15, 77.21, 139.60°)
OKLab	oklab(74.89% -0.1596 0.1175)
OKLCH	oklch(74.89% 0.198 143.6)
XYZ	xyz(26.2184, 45.3970, 15.1638)
Luminance	0.4540 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4ECC51 #CC4EC9

analogous

#8ACC4E #4ECC51 #4ECC90

triadic

#4ECC51 #514ECC #CC514E

tetradic

#4ECC51 #4E8ACC #CC4EC9 #CC904E

square

#4ECC51 #4E8ACC #CC4EC9 #CC904E

split-complementary

#4ECC51 #904ECC #CC4E8A

monochromatic

#247C26 #31AB34 #4ECC51 #7EDA80 #ADE7AE

Accessibility & contrast

On white

2.08

#4ECC51 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.08

#4ECC51 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #4ECC51

10.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4ECC51	#FFFFFF	#000000	##000000
##4ECC51	1.00	2.08	10.08	10.08
#FFFFFF	2.08	1.00	21.00	21.00
#000000	10.08	21.00	1.00	1.00
##000000	10.08	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D0BA44

Deuteranopia (green-blind)

#C0AF5B

Tritanopia (blue-blind)

#34C7B2

Achromatopsia (no color)

#B4B4B4

Design tokens & code

CSS

--color: #4ecc51;
/* rgb */ color: rgb(78, 204, 81);
/* oklch */ color: oklch(74.9% 0.198 143.6);

Tailwind

colors: {
  custom: {
    50: '#8ddd86',
    500: '#4ecc51',
    950: '#000000',
  },
}

SCSS

$custom: #4ecc51;
$custom-light: #8ddd86;
$custom-dark: #000000;

JSON

{
  "hex": "#4ecc51",
  "rgb": {
    "r": 78,
    "g": 204,
    "b": 81
  },
  "hsl": {
    "h": 121.429,
    "s": 55.263,
    "l": 55.294
  },
  "oklch": {
    "l": 0.74894,
    "c": 0.19815,
    "h": 143.6
  },
  "luminance": 0.454
}

Semantic roles & 50–950 ramp

primary

#4ECC51

secondary

#D5A1D4

accent

#49DBDF

background

#F9FDF8

surface

#F2FBF0

border

#CCD4CB

text

#0D150B

muted

#7E837C

Preview Lab

Preview with #4ECC51

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

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