#EFF599#EFF599

#EFF599 is a very light, moderate yellow. Relative luminance 0.860; OKLCH L 94.5% C 0.115 H 111.6°. Best body text is #000000 at 18.19:1 contrast (WCAG AA passes).

Color values

HEX	#EFF599
RGB	rgb(239, 245, 153)
HSL	hsl(64, 82%, 78%)
HSV	hsv(64, 38%, 96%)
CMYK	cmyk(2.4%, 0%, 37.6%, 3.9%)
CIE-LAB	lab(94.29, -15.43, 43.63)
CIE-LCH	lch(94.29, 46.28, 109.48°)
OKLab	oklab(94.54% -0.0422 0.1067)
OKLCH	oklch(94.54% 0.115 111.6)
XYZ	xyz(73.9995, 85.9566, 42.8239)
Luminance	0.8596 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF599 #9F99F5

analogous

#F5CD99 #EFF599 #C1F599

triadic

#EFF599 #99EFF5 #F599EF

tetradic

#EFF599 #99F5CD #9F99F5 #F599C1

square

#EFF599 #99F5CD #9F99F5 #F599C1

split-complementary

#EFF599 #99C1F5 #CD99F5

monochromatic

#DEEA2A #E6F061 #EFF599 #F8FAD1 #FBFCE3

Accessibility & contrast

On white

1.15

#EFF599 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.19

#EFF599 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF599

18.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF599	#FFFFFF	#000000	##000000
##EFF599	1.00	1.15	18.19	18.19
#FFFFFF	1.15	1.00	21.00	21.00
#000000	18.19	21.00	1.00	1.00
##000000	18.19	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFED92

Deuteranopia (green-blind)

#FFF09D

Tritanopia (blue-blind)

#FAEBDE

Achromatopsia (no color)

#EFEFEF

Design tokens & code

CSS

--color: #eff599;
/* rgb */ color: rgb(239, 245, 153);
/* oklch */ color: oklch(94.5% 0.115 111.6);

Tailwind

colors: {
  custom: {
    50: '#f5f8b8',
    500: '#eff599',
    950: '#000000',
  },
}

SCSS

$custom: #eff599;
$custom-light: #f5f8b8;
$custom-dark: #000000;

JSON

{
  "hex": "#eff599",
  "rgb": {
    "r": 239,
    "g": 245,
    "b": 153
  },
  "hsl": {
    "h": 63.913,
    "s": 82.143,
    "l": 78.039
  },
  "oklch": {
    "l": 0.94539,
    "c": 0.11476,
    "h": 111.6
  },
  "luminance": 0.85955
}

Semantic roles & 50–950 ramp

primary

#EFF599

secondary

#665FD4

accent

#07DF15

background

#FFFFFD

surface

#FFFEF8

border

#D7D6D1

text

#171711

muted

#858581

Preview Lab

Preview with #EFF599

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

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