#EFF866#EFF866

#EFF866 is a very light, vivid yellow. Relative luminance 0.864; OKLCH L 94.5% C 0.167 H 112.5°. Best body text is #000000 at 18.29:1 contrast (WCAG AA passes).

Color values

HEX	#EFF866
RGB	rgb(239, 248, 102)
HSL	hsl(64, 91%, 69%)
HSV	hsv(64, 59%, 97%)
CMYK	cmyk(3.6%, 0%, 58.9%, 2.7%)
CIE-LAB	lab(94.50, -21.43, 67.27)
CIE-LCH	lch(94.50, 70.60, 107.67°)
OKLab	oklab(94.52% -0.0639 0.1544)
OKLCH	oklch(94.52% 0.167 112.5)
XYZ	xyz(71.5641, 86.4463, 25.4837)
Luminance	0.8645 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF866 #6F66F8

analogous

#F8B866 #EFF866 #A6F866

triadic

#EFF866 #66EFF8 #F866EF

tetradic

#EFF866 #66F8B8 #6F66F8 #F866A6

square

#EFF866 #66F8B8 #6F66F8 #F866A6

split-complementary

#EFF866 #66A6F8 #B866F8

monochromatic

#CDDA0A #E9F52B #EFF866 #F5FBA1 #FBFDDB

Accessibility & contrast

On white

1.15

#EFF866 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.29

#EFF866 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF866

18.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF866	#FFFFFF	#000000	##000000
##EFF866	1.00	1.15	18.29	18.29
#FFFFFF	1.15	1.00	21.00	21.00
#000000	18.29	21.00	1.00	1.00
##000000	18.29	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFED55

Deuteranopia (green-blind)

#FFF16F

Tritanopia (blue-blind)

#FEEAD9

Achromatopsia (no color)

#EFEFEF

Design tokens & code

CSS

--color: #eff866;
/* rgb */ color: rgb(239, 248, 102);
/* oklch */ color: oklch(94.5% 0.167 112.5);

Tailwind

colors: {
  custom: {
    50: '#f7fa97',
    500: '#eff866',
    950: '#000000',
  },
}

SCSS

$custom: #eff866;
$custom-light: #f7fa97;
$custom-dark: #000000;

JSON

{
  "hex": "#eff866",
  "rgb": {
    "r": 239,
    "g": 248,
    "b": 102
  },
  "hsl": {
    "h": 63.699,
    "s": 91.25,
    "l": 68.627
  },
  "oklch": {
    "l": 0.94521,
    "c": 0.16713,
    "h": 112.5
  },
  "luminance": 0.86445
}

Semantic roles & 50–950 ramp

primary

#EFF866

secondary

#3B31D2

accent

#00E60E

background

#FFFFFC

surface

#FFFFF5

border

#D7D7CF

text

#18170E

muted

#86857F

Preview Lab

Preview with #EFF866

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

Preview Lab → · Contrast checker → · Palette generator →