#ECF659#ECF659

#ECF659 is a very light, vivid yellow. Relative luminance 0.845; OKLCH L 93.8% C 0.175 H 112.8°. Best body text is #000000 at 17.89:1 contrast (WCAG AA passes).

Color values

HEX	#ECF659
RGB	rgb(236, 246, 89)
HSL	hsl(64, 90%, 66%)
HSV	hsv(64, 64%, 96%)
CMYK	cmyk(4.1%, 0%, 63.8%, 3.5%)
CIE-LAB	lab(93.65, -22.50, 71.52)
CIE-LCH	lch(93.65, 74.98, 107.47°)
OKLab	oklab(93.75% -0.068 0.1617)
OKLCH	oklch(93.75% 0.175 112.8)
XYZ	xyz(69.3529, 84.4671, 22.0997)
Luminance	0.8447 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF659 #6359F6

analogous

#F6B259 #ECF659 #9DF659

triadic

#ECF659 #59ECF6 #F659EC

tetradic

#ECF659 #59F6B2 #6359F6 #F6599D

square

#ECF659 #59F6B2 #6359F6 #F6599D

split-complementary

#ECF659 #599DF6 #B259F6

monochromatic

#BECA0B #E5F31F #ECF659 #F3F993 #F9FCCD

Accessibility & contrast

On white

1.17

#ECF659 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.89

#ECF659 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF659

17.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF659	#FFFFFF	#000000	##000000
##ECF659	1.00	1.17	17.89	17.89
#FFFFFF	1.17	1.00	21.00	21.00
#000000	17.89	21.00	1.00	1.00
##000000	17.89	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEB44

Deuteranopia (green-blind)

#FFEF64

Tritanopia (blue-blind)

#FBE8D6

Achromatopsia (no color)

#EDEDED

Design tokens & code

CSS

--color: #ecf659;
/* rgb */ color: rgb(236, 246, 89);
/* oklch */ color: oklch(93.8% 0.175 112.8);

Tailwind

colors: {
  custom: {
    50: '#f5f98f',
    500: '#ecf659',
    950: '#000000',
  },
}

SCSS

$custom: #ecf659;
$custom-light: #f5f98f;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf659",
  "rgb": {
    "r": 236,
    "g": 246,
    "b": 89
  },
  "hsl": {
    "h": 63.822,
    "s": 89.714,
    "l": 65.686
  },
  "oklch": {
    "l": 0.93753,
    "c": 0.17546,
    "h": 112.8
  },
  "luminance": 0.84466
}

Semantic roles & 50–950 ramp

primary

#ECF659

secondary

#372DC6

accent

#00E60F

background

#FFFFFC

surface

#FFFFF4

border

#D7D7CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #ECF659

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

Preview Lab → · Contrast checker → · Palette generator →