#ECFD59#ECFD59

#ECFD59 is a very light, vivid yellow. Relative luminance 0.888; OKLCH L 95.2% C 0.183 H 115.0°. Best body text is #000000 at 18.76:1 contrast (WCAG AA passes).

Color values

HEX	#ECFD59
RGB	rgb(236, 253, 89)
HSL	hsl(66, 98%, 67%)
HSV	hsv(66, 65%, 99%)
CMYK	cmyk(6.7%, 0%, 64.8%, 0.8%)
CIE-LAB	lab(95.50, -25.82, 73.44)
CIE-LCH	lch(95.50, 77.84, 109.37°)
OKLab	oklab(95.23% -0.0773 0.1658)
OKLCH	oklch(95.23% 0.183 115)
XYZ	xyz(71.5223, 88.8059, 22.8228)
Luminance	0.8881 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECFD59 #6A59FD

analogous

#FDBC59 #ECFD59 #9AFD59

triadic

#ECFD59 #59ECFD #FD59EC

tetradic

#ECFD59 #59FDBC #6A59FD #FD599A

square

#ECFD59 #59FDBC #6A59FD #FD599A

split-complementary

#ECFD59 #599AFD #BC59FD

monochromatic

#C3D903 #E5FC1D #ECFD59 #F3FE95 #FAFED2

Accessibility & contrast

On white

1.12

#ECFD59 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.76

#ECFD59 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECFD59

18.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECFD59	#FFFFFF	#000000	##000000
##ECFD59	1.00	1.12	18.76	18.76
#FFFFFF	1.12	1.00	21.00	21.00
#000000	18.76	21.00	1.00	1.00
##000000	18.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF142

Deuteranopia (green-blind)

#FFF365

Tritanopia (blue-blind)

#FAEFDC

Achromatopsia (no color)

#F2F2F2

Design tokens & code

CSS

--color: #ecfd59;
/* rgb */ color: rgb(236, 253, 89);
/* oklch */ color: oklch(95.2% 0.183 115.0);

Tailwind

colors: {
  custom: {
    50: '#f5fe90',
    500: '#ecfd59',
    950: '#000000',
  },
}

SCSS

$custom: #ecfd59;
$custom-light: #f5fe90;
$custom-dark: #000000;

JSON

{
  "hex": "#ecfd59",
  "rgb": {
    "r": 236,
    "g": 253,
    "b": 89
  },
  "hsl": {
    "h": 66.22,
    "s": 97.619,
    "l": 67.059
  },
  "oklch": {
    "l": 0.95232,
    "c": 0.18292,
    "h": 115
  },
  "luminance": 0.88805
}

Semantic roles & 50–950 ramp

primary

#ECFD59

secondary

#3928D3

accent

#00E618

background

#FFFFFC

surface

#FFFFF4

border

#D7D7CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #ECFD59

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

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