#ECF278#ECF278

#ECF278 is a very light, vivid yellow. Relative luminance 0.827; OKLCH L 93.2% C 0.146 H 111.4°. Best body text is #000000 at 17.54:1 contrast (WCAG AA passes).

Color values

HEX	#ECF278
RGB	rgb(236, 242, 120)
HSL	hsl(63, 82%, 71%)
HSV	hsv(63, 50%, 95%)
CMYK	cmyk(2.5%, 0%, 50.4%, 5.1%)
CIE-LAB	lab(92.88, -18.35, 57.51)
CIE-LCH	lch(92.88, 60.36, 107.70°)
OKLab	oklab(93.23% -0.0532 0.1355)
OKLCH	oklch(93.23% 0.146 111.4)
XYZ	xyz(69.7358, 82.6946, 30.0537)
Luminance	0.8269 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF278 #7E78F2

analogous

#F2BB78 #ECF278 #AFF278

triadic

#ECF278 #78ECF2 #F278EC

tetradic

#ECF278 #78F2BB #7E78F2 #F278AF

square

#ECF278 #78F2BB #7E78F2 #F278AF

split-complementary

#ECF278 #78AFF2 #BB78F2

monochromatic

#D1DB15 #E4ED40 #ECF278 #F4F7B0 #FBFCE3

Accessibility & contrast

On white

1.20

#ECF278 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.54

#ECF278 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF278

17.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF278	#FFFFFF	#000000	##000000
##ECF278	1.00	1.20	17.54	17.54
#FFFFFF	1.20	1.00	21.00	21.00
#000000	17.54	21.00	1.00	1.00
##000000	17.54	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE96D

Deuteranopia (green-blind)

#FFEC7E

Tritanopia (blue-blind)

#F9E6D6

Achromatopsia (no color)

#EBEBEB

Design tokens & code

CSS

--color: #ecf278;
/* rgb */ color: rgb(236, 242, 120);
/* oklch */ color: oklch(93.2% 0.146 111.4);

Tailwind

colors: {
  custom: {
    50: '#f4f6a2',
    500: '#ecf278',
    950: '#000000',
  },
}

SCSS

$custom: #ecf278;
$custom-light: #f4f6a2;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf278",
  "rgb": {
    "r": 236,
    "g": 242,
    "b": 120
  },
  "hsl": {
    "h": 62.951,
    "s": 82.432,
    "l": 70.98
  },
  "oklch": {
    "l": 0.93225,
    "c": 0.14554,
    "h": 111.4
  },
  "luminance": 0.82693
}

Semantic roles & 50–950 ramp

primary

#ECF278

secondary

#4942CC

accent

#07DF11

background

#FFFFFC

surface

#FFFEF6

border

#D7D6D0

text

#17170F

muted

#858580

Preview Lab

Preview with #ECF278

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

Preview Lab → · Contrast checker → · Palette generator →