#EFF858#EFF858

#EFF858 is a very light, vivid yellow. Relative luminance 0.862; OKLCH L 94.4% C 0.178 H 112.4°. Best body text is #000000 at 18.24:1 contrast (WCAG AA passes).

Color values

HEX	#EFF858
RGB	rgb(239, 248, 88)
HSL	hsl(63, 92%, 66%)
HSV	hsv(63, 65%, 97%)
CMYK	cmyk(3.6%, 0%, 64.5%, 2.7%)
CIE-LAB	lab(94.39, -22.32, 72.74)
CIE-LCH	lch(94.39, 76.09, 107.06°)
OKLab	oklab(94.4% -0.0678 0.1641)
OKLCH	oklch(94.4% 0.178 112.4)
XYZ	xyz(70.9275, 86.1917, 22.1310)
Luminance	0.8619 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF858 #6158F8

analogous

#F8B158 #EFF858 #9FF858

triadic

#EFF858 #58EFF8 #F858EF

tetradic

#EFF858 #58F8B1 #6158F8 #F8589F

square

#EFF858 #58F8B1 #6158F8 #F8589F

split-complementary

#EFF858 #589FF8 #B158F8

monochromatic

#C2CD09 #E9F61D #EFF858 #F5FA93 #FAFDCD

Accessibility & contrast

On white

1.15

#EFF858 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.24

#EFF858 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF858

18.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF858	#FFFFFF	#000000	##000000
##EFF858	1.00	1.15	18.24	18.24
#FFFFFF	1.15	1.00	21.00	21.00
#000000	18.24	21.00	1.00	1.00
##000000	18.24	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFED42

Deuteranopia (green-blind)

#FFF163

Tritanopia (blue-blind)

#FEEAD7

Achromatopsia (no color)

#EFEFEF

Design tokens & code

CSS

--color: #eff858;
/* rgb */ color: rgb(239, 248, 88);
/* oklch */ color: oklch(94.4% 0.178 112.4);

Tailwind

colors: {
  custom: {
    50: '#f8fa8f',
    500: '#eff858',
    950: '#000000',
  },
}

SCSS

$custom: #eff858;
$custom-light: #f8fa8f;
$custom-dark: #000000;

JSON

{
  "hex": "#eff858",
  "rgb": {
    "r": 239,
    "g": 248,
    "b": 88
  },
  "hsl": {
    "h": 63.375,
    "s": 91.954,
    "l": 65.882
  },
  "oklch": {
    "l": 0.94399,
    "c": 0.17754,
    "h": 112.4
  },
  "luminance": 0.8619
}

Semantic roles & 50–950 ramp

primary

#EFF858

secondary

#342CC9

accent

#00E60D

background

#FFFFFC

surface

#FFFFF4

border

#D7D7CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #EFF858

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

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