#EFF589#EFF589

#EFF589 is a very light, vivid yellow. Relative luminance 0.855; OKLCH L 94.3% C 0.132 H 111.5°. Best body text is #000000 at 18.09:1 contrast (WCAG AA passes).

Color values

HEX	#EFF589
RGB	rgb(239, 245, 137)
HSL	hsl(63, 84%, 75%)
HSV	hsv(63, 44%, 96%)
CMYK	cmyk(2.4%, 0%, 44.1%, 3.9%)
CIE-LAB	lab(94.08, -17.09, 51.09)
CIE-LCH	lch(94.08, 53.87, 108.50°)
OKLab	oklab(94.3% -0.0482 0.1227)
OKLCH	oklch(94.3% 0.132 111.5)
XYZ	xyz(72.7655, 85.4630, 36.3249)
Luminance	0.8546 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF589 #8F89F5

analogous

#F5C589 #EFF589 #B9F589

triadic

#EFF589 #89EFF5 #F589EF

tetradic

#EFF589 #89F5C5 #8F89F5 #F589B9

square

#EFF589 #89F5C5 #8F89F5 #F589B9

split-complementary

#EFF589 #89B9F5 #C589F5

monochromatic

#E0EB18 #E7F051 #EFF589 #F7FAC1 #FBFDE3

Accessibility & contrast

On white

1.16

#EFF589 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.09

#EFF589 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF589

18.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF589	#FFFFFF	#000000	##000000
##EFF589	1.00	1.16	18.09	18.09
#FFFFFF	1.16	1.00	21.00	21.00
#000000	18.09	21.00	1.00	1.00
##000000	18.09	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEC80

Deuteranopia (green-blind)

#FFF08E

Tritanopia (blue-blind)

#FBEADB

Achromatopsia (no color)

#EEEEEE

Design tokens & code

CSS

--color: #eff589;
/* rgb */ color: rgb(239, 245, 137);
/* oklch */ color: oklch(94.3% 0.132 111.5);

Tailwind

colors: {
  custom: {
    50: '#f6f8ad',
    500: '#eff589',
    950: '#000000',
  },
}

SCSS

$custom: #eff589;
$custom-light: #f6f8ad;
$custom-dark: #000000;

JSON

{
  "hex": "#eff589",
  "rgb": {
    "r": 239,
    "g": 245,
    "b": 137
  },
  "hsl": {
    "h": 63.333,
    "s": 84.375,
    "l": 74.902
  },
  "oklch": {
    "l": 0.94302,
    "c": 0.13178,
    "h": 111.5
  },
  "luminance": 0.85462
}

Semantic roles & 50–950 ramp

primary

#EFF589

secondary

#5750D2

accent

#05E111

background

#FFFFFD

surface

#FFFEF7

border

#D7D6D0

text

#171710

muted

#858581

Preview Lab

Preview with #EFF589

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

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