#ECF646#ECF646

#ECF646 is a very light, vivid yellow. Relative luminance 0.842; OKLCH L 93.6% C 0.188 H 112.8°. Best body text is #000000 at 17.84:1 contrast (WCAG AA passes).

Color values

HEX	#ECF646
RGB	rgb(236, 246, 70)
HSL	hsl(63, 91%, 62%)
HSV	hsv(63, 72%, 96%)
CMYK	cmyk(4.1%, 0%, 71.5%, 3.5%)
CIE-LAB	lab(93.53, -23.50, 78.22)
CIE-LCH	lch(93.53, 81.68, 106.72°)
OKLab	oklab(93.62% -0.0726 0.1729)
OKLCH	oklch(93.62% 0.188 112.8)
XYZ	xyz(68.6555, 84.1882, 18.4265)
Luminance	0.8419 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF646 #5046F6

analogous

#F6A846 #ECF646 #94F646

triadic

#ECF646 #46ECF6 #F646EC

tetradic

#ECF646 #46F6A8 #5046F6 #F64694

square

#ECF646 #46F6A8 #5046F6 #F64694

split-complementary

#ECF646 #4694F6 #A846F6

monochromatic

#AFB909 #E6F30C #ECF646 #F2F980 #F8FCBB

Accessibility & contrast

On white

1.18

#ECF646 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.84

#ECF646 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF646

17.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF646	#FFFFFF	#000000	##000000
##ECF646	1.00	1.18	17.84	17.84
#FFFFFF	1.18	1.00	21.00	21.00
#000000	17.84	21.00	1.00	1.00
##000000	17.84	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEA23

Deuteranopia (green-blind)

#FFEE54

Tritanopia (blue-blind)

#FCE7D4

Achromatopsia (no color)

#ECECEC

Design tokens & code

CSS

--color: #ecf646;
/* rgb */ color: rgb(236, 246, 70);
/* oklch */ color: oklch(93.6% 0.188 112.8);

Tailwind

colors: {
  custom: {
    50: '#f6f985',
    500: '#ecf646',
    950: '#000000',
  },
}

SCSS

$custom: #ecf646;
$custom-light: #f6f985;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf646",
  "rgb": {
    "r": 236,
    "g": 246,
    "b": 70
  },
  "hsl": {
    "h": 63.409,
    "s": 90.722,
    "l": 61.961
  },
  "oklch": {
    "l": 0.93618,
    "c": 0.18751,
    "h": 112.8
  },
  "luminance": 0.84187
}

Semantic roles & 50–950 ramp

primary

#ECF646

secondary

#3129B7

accent

#00E60D

background

#FFFFFC

surface

#FFFEF4

border

#D7D6CE

text

#18170C

muted

#86857F

Preview Lab

Preview with #ECF646

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

Preview Lab → · Contrast checker → · Palette generator →