#EFF66A#EFF66A

#EFF66A is a very light, vivid yellow. Relative luminance 0.853; OKLCH L 94.1% C 0.162 H 111.8°. Best body text is #000000 at 18.06:1 contrast (WCAG AA passes).

Color values

HEX	#EFF66A
RGB	rgb(239, 246, 106)
HSL	hsl(63, 89%, 69%)
HSV	hsv(63, 57%, 96%)
CMYK	cmyk(2.8%, 0%, 56.9%, 3.5%)
CIE-LAB	lab(94.01, -20.19, 65.05)
CIE-LCH	lch(94.01, 68.11, 107.25°)
OKLab	oklab(94.14% -0.06 0.1502)
OKLCH	oklch(94.14% 0.162 111.8)
XYZ	xyz(71.1557, 85.3044, 26.3499)
Luminance	0.8530 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF66A #716AF6

analogous

#F6B76A #EFF66A #A9F66A

triadic

#EFF66A #6AEFF6 #F66AEF

tetradic

#EFF66A #6AF6B7 #716AF6 #F66AA9

square

#EFF66A #6AF6B7 #716AF6 #F66AA9

split-complementary

#EFF66A #6AA9F6 #B76AF6

monochromatic

#CED90D #E9F330 #EFF66A #F5F9A4 #FBFDDD

Accessibility & contrast

On white

1.16

#EFF66A on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.06

#EFF66A on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF66A

18.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF66A	#FFFFFF	#000000	##000000
##EFF66A	1.00	1.16	18.06	18.06
#FFFFFF	1.16	1.00	21.00	21.00
#000000	18.06	21.00	1.00	1.00
##000000	18.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEC5B

Deuteranopia (green-blind)

#FFF072

Tritanopia (blue-blind)

#FEE9D8

Achromatopsia (no color)

#EEEEEE

Design tokens & code

CSS

--color: #eff66a;
/* rgb */ color: rgb(239, 246, 106);
/* oklch */ color: oklch(94.1% 0.162 111.8);

Tailwind

colors: {
  custom: {
    50: '#f7f999',
    500: '#eff66a',
    950: '#000000',
  },
}

SCSS

$custom: #eff66a;
$custom-light: #f7f999;
$custom-dark: #000000;

JSON

{
  "hex": "#eff66a",
  "rgb": {
    "r": 239,
    "g": 246,
    "b": 106
  },
  "hsl": {
    "h": 63,
    "s": 88.608,
    "l": 69.02
  },
  "oklch": {
    "l": 0.94141,
    "c": 0.16173,
    "h": 111.8
  },
  "luminance": 0.85303
}

Semantic roles & 50–950 ramp

primary

#EFF66A

secondary

#3C35D0

accent

#00E50C

background

#FFFFFC

surface

#FFFFF5

border

#D7D7CF

text

#18170E

muted

#86857F

Preview Lab

Preview with #EFF66A

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

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