#ECF77C#ECF77C

#ECF77C is a very light, vivid yellow. Relative luminance 0.858; OKLCH L 94.3% C 0.147 H 113.4°. Best body text is #000000 at 18.16:1 contrast (WCAG AA passes).

Color values

HEX	#ECF77C
RGB	rgb(236, 247, 124)
HSL	hsl(65, 88%, 73%)
HSV	hsv(65, 50%, 97%)
CMYK	cmyk(4.5%, 0%, 49.8%, 3.1%)
CIE-LAB	lab(94.23, -20.42, 57.27)
CIE-LCH	lch(94.23, 60.80, 109.62°)
OKLab	oklab(94.32% -0.0587 0.1353)
OKLCH	oklch(94.32% 0.148 113.4)
XYZ	xyz(71.4922, 85.8108, 31.8619)
Luminance	0.8581 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF77C #877CF7

analogous

#F7C57C #ECF77C #AEF77C

triadic

#ECF77C #7CECF7 #F77CEC

tetradic

#ECF77C #7CF7C5 #877CF7 #F77CAE

square

#ECF77C #7CF7C5 #877CF7 #F77CAE

split-complementary

#ECF77C #7CAEF7 #C57CF7

monochromatic

#D7EA0E #E4F342 #ECF77C #F4FBB6 #FBFDE2

Accessibility & contrast

On white

1.16

#ECF77C on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.16

#ECF77C on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF77C

18.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF77C	#FFFFFF	#000000	##000000
##ECF77C	1.00	1.16	18.16	18.16
#FFFFFF	1.16	1.00	21.00	21.00
#000000	18.16	21.00	1.00	1.00
##000000	18.16	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFED71

Deuteranopia (green-blind)

#FFF083

Tritanopia (blue-blind)

#F9EBDB

Achromatopsia (no color)

#EEEEEE

Design tokens & code

CSS

--color: #ecf77c;
/* rgb */ color: rgb(236, 247, 124);
/* oklch */ color: oklch(94.3% 0.147 113.4);

Tailwind

colors: {
  custom: {
    50: '#f4f9a5',
    500: '#ecf77c',
    950: '#000000',
  },
}

SCSS

$custom: #ecf77c;
$custom-light: #f4f9a5;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf77c",
  "rgb": {
    "r": 236,
    "g": 247,
    "b": 124
  },
  "hsl": {
    "h": 65.366,
    "s": 88.489,
    "l": 72.745
  },
  "oklch": {
    "l": 0.94317,
    "c": 0.1475,
    "h": 113.4
  },
  "luminance": 0.8581
}

Semantic roles & 50–950 ramp

primary

#ECF77C

secondary

#5144D3

accent

#00E515

background

#FFFFFC

surface

#FFFFF6

border

#D7D7D0

text

#17170F

muted

#858580

Preview Lab

Preview with #ECF77C

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

Preview Lab → · Contrast checker → · Palette generator →