#ECF979#ECF979

#ECF979 is a very light, vivid yellow. Relative luminance 0.870; OKLCH L 94.7% C 0.153 H 114.1°. Best body text is #000000 at 18.39:1 contrast (WCAG AA passes).

Color values

HEX	#ECF979
RGB	rgb(236, 249, 121)
HSL	hsl(66, 91%, 73%)
HSV	hsv(66, 51%, 98%)
CMYK	cmyk(5.2%, 0%, 51.4%, 2.4%)
CIE-LAB	lab(94.72, -21.63, 59.21)
CIE-LCH	lch(94.72, 63.04, 110.07°)
OKLab	oklab(94.7% -0.0624 0.1393)
OKLCH	oklch(94.7% 0.153 114.1)
XYZ	xyz(71.9202, 86.9658, 31.0828)
Luminance	0.8697 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF979 #8679F9

analogous

#F9C679 #ECF979 #ACF979

triadic

#ECF979 #79ECF9 #F979EC

tetradic

#ECF979 #79F9C6 #8679F9 #F979AC

square

#ECF979 #79F9C6 #8679F9 #F979AC

split-complementary

#ECF979 #79ACF9 #C679F9

monochromatic

#D6ED0B #E4F63E #ECF979 #F4FCB4 #FBFEE2

Accessibility & contrast

On white

1.14

#ECF979 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.39

#ECF979 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF979

18.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF979	#FFFFFF	#000000	##000000
##ECF979	1.00	1.14	18.39	18.39
#FFFFFF	1.14	1.00	21.00	21.00
#000000	18.39	21.00	1.00	1.00
##000000	18.39	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEF6D

Deuteranopia (green-blind)

#FFF180

Tritanopia (blue-blind)

#F9EDDC

Achromatopsia (no color)

#F0F0F0

Design tokens & code

CSS

--color: #ecf979;
/* rgb */ color: rgb(236, 249, 121);
/* oklch */ color: oklch(94.7% 0.153 114.1);

Tailwind

colors: {
  custom: {
    50: '#f4fba3',
    500: '#ecf979',
    950: '#000000',
  },
}

SCSS

$custom: #ecf979;
$custom-light: #f4fba3;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf979",
  "rgb": {
    "r": 236,
    "g": 249,
    "b": 121
  },
  "hsl": {
    "h": 66.094,
    "s": 91.429,
    "l": 72.549
  },
  "oklch": {
    "l": 0.94701,
    "c": 0.15262,
    "h": 114.1
  },
  "luminance": 0.86965
}

Semantic roles & 50–950 ramp

primary

#ECF979

secondary

#5041D5

accent

#00E617

background

#FFFFFC

surface

#FFFFF6

border

#D7D7D0

text

#17170F

muted

#858580

Preview Lab

Preview with #ECF979

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

Preview Lab → · Contrast checker → · Palette generator →