#ECF661#ECF661

#ECF661 is a very light, vivid yellow. Relative luminance 0.846; OKLCH L 93.8% C 0.170 H 112.8°. Best body text is #000000 at 17.92:1 contrast (WCAG AA passes).

Color values

HEX	#ECF661
RGB	rgb(236, 246, 97)
HSL	hsl(64, 89%, 67%)
HSV	hsv(64, 61%, 96%)
CMYK	cmyk(4.1%, 0%, 60.6%, 3.5%)
CIE-LAB	lab(93.71, -22.00, 68.41)
CIE-LCH	lch(93.71, 71.86, 107.83°)
OKLab	oklab(93.82% -0.0658 0.1563)
OKLCH	oklch(93.82% 0.17 112.8)
XYZ	xyz(69.7073, 84.6089, 23.9660)
Luminance	0.8461 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF661 #6B61F6

analogous

#F6B661 #ECF661 #A1F661

triadic

#ECF661 #61ECF6 #F661EC

tetradic

#ECF661 #61F6B6 #6B61F6 #F661A1

square

#ECF661 #61F6B6 #6B61F6 #F661A1

split-complementary

#ECF661 #61A1F6 #B661F6

monochromatic

#C4D10C #E5F327 #ECF661 #F3F99B #FAFDD5

Accessibility & contrast

On white

1.17

#ECF661 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.92

#ECF661 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF661

17.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF661	#FFFFFF	#000000	##000000
##ECF661	1.00	1.17	17.92	17.92
#FFFFFF	1.17	1.00	21.00	21.00
#000000	17.92	21.00	1.00	1.00
##000000	17.92	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEB4F

Deuteranopia (green-blind)

#FFEF6A

Tritanopia (blue-blind)

#FBE8D7

Achromatopsia (no color)

#EDEDED

Design tokens & code

CSS

--color: #ecf661;
/* rgb */ color: rgb(236, 246, 97);
/* oklch */ color: oklch(93.8% 0.170 112.8);

Tailwind

colors: {
  custom: {
    50: '#f5f994',
    500: '#ecf661',
    950: '#000000',
  },
}

SCSS

$custom: #ecf661;
$custom-light: #f5f994;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf661",
  "rgb": {
    "r": 236,
    "g": 246,
    "b": 97
  },
  "hsl": {
    "h": 64.027,
    "s": 89.222,
    "l": 67.255
  },
  "oklch": {
    "l": 0.93822,
    "c": 0.16957,
    "h": 112.8
  },
  "luminance": 0.84607
}

Semantic roles & 50–950 ramp

primary

#ECF661

secondary

#3A2FCC

accent

#00E60F

background

#FFFFFC

surface

#FFFFF5

border

#D7D7CF

text

#17170E

muted

#85857F

Preview Lab

Preview with #ECF661

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

Preview Lab → · Contrast checker → · Palette generator →