#ECFB56#ECFB56

#ECFB56 is a very light, vivid yellow. Relative luminance 0.875; OKLCH L 94.8% C 0.183 H 114.4°. Best body text is #000000 at 18.50:1 contrast (WCAG AA passes).

Color values

HEX	#ECFB56
RGB	rgb(236, 251, 86)
HSL	hsl(65, 95%, 66%)
HSV	hsv(65, 66%, 98%)
CMYK	cmyk(6%, 0%, 65.7%, 1.6%)
CIE-LAB	lab(94.95, -25.05, 74.00)
CIE-LCH	lch(94.95, 78.12, 108.70°)
OKLab	oklab(94.79% -0.0754 0.1665)
OKLCH	oklch(94.79% 0.183 114.4)
XYZ	xyz(70.7708, 87.5004, 21.9634)
Luminance	0.8750 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECFB56 #6556FB

analogous

#FBB856 #ECFB56 #99FB56

triadic

#ECFB56 #56ECFB #FB56EC

tetradic

#ECFB56 #56FBB8 #6556FB #FB5699

square

#ECFB56 #56FBB8 #6556FB #FB5699

split-complementary

#ECFB56 #5699FB #B856FB

monochromatic

#BFD205 #E5FA1A #ECFB56 #F3FC92 #F9FECE

Accessibility & contrast

On white

1.14

#ECFB56 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.50

#ECFB56 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECFB56

18.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECFB56	#FFFFFF	#000000	##000000
##ECFB56	1.00	1.14	18.50	18.50
#FFFFFF	1.14	1.00	21.00	21.00
#000000	18.50	21.00	1.00	1.00
##000000	18.50	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEF3E

Deuteranopia (green-blind)

#FFF262

Tritanopia (blue-blind)

#FBEDDA

Achromatopsia (no color)

#F0F0F0

Design tokens & code

CSS

--color: #ecfb56;
/* rgb */ color: rgb(236, 251, 86);
/* oklch */ color: oklch(94.8% 0.183 114.4);

Tailwind

colors: {
  custom: {
    50: '#f6fc8e',
    500: '#ecfb56',
    950: '#000000',
  },
}

SCSS

$custom: #ecfb56;
$custom-light: #f6fc8e;
$custom-dark: #000000;

JSON

{
  "hex": "#ecfb56",
  "rgb": {
    "r": 236,
    "g": 251,
    "b": 86
  },
  "hsl": {
    "h": 65.455,
    "s": 95.376,
    "l": 66.078
  },
  "oklch": {
    "l": 0.94785,
    "c": 0.18282,
    "h": 114.4
  },
  "luminance": 0.87499
}

Semantic roles & 50–950 ramp

primary

#ECFB56

secondary

#3829CC

accent

#00E615

background

#FFFFFC

surface

#FFFFF4

border

#D7D7CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #ECFB56

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

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