#EFF57B#EFF57B

#EFF57B is a very light, vivid yellow. Relative luminance 0.851; OKLCH L 94.1% C 0.146 H 111.4°. Best body text is #000000 at 18.02:1 contrast (WCAG AA passes).

Color values

HEX	#EFF57B
RGB	rgb(239, 245, 123)
HSL	hsl(63, 86%, 72%)
HSV	hsv(63, 50%, 96%)
CMYK	cmyk(2.4%, 0%, 49.8%, 3.9%)
CIE-LAB	lab(93.92, -18.37, 57.42)
CIE-LCH	lch(93.92, 60.29, 107.74°)
OKLab	oklab(94.12% -0.0531 0.1355)
OKLCH	oklch(94.12% 0.146 111.4)
XYZ	xyz(71.8256, 85.0870, 31.3748)
Luminance	0.8509 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF57B #817BF5

analogous

#F5BE7B #EFF57B #B2F57B

triadic

#EFF57B #7BEFF5 #F57BEF

tetradic

#EFF57B #7BF5BE #817BF5 #F57BB2

square

#EFF57B #7BF5BE #817BF5 #F57BB2

split-complementary

#EFF57B #7BB2F5 #BE7BF5

monochromatic

#DAE411 #E8F142 #EFF57B #F6F9B4 #FCFDE3

Accessibility & contrast

On white

1.17

#EFF57B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.02

#EFF57B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF57B

18.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF57B	#FFFFFF	#000000	##000000
##EFF57B	1.00	1.17	18.02	18.02
#FFFFFF	1.17	1.00	21.00	21.00
#000000	18.02	21.00	1.00	1.00
##000000	18.02	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEC70

Deuteranopia (green-blind)

#FFEF81

Tritanopia (blue-blind)

#FDE9D9

Achromatopsia (no color)

#EDEDED

Design tokens & code

CSS

--color: #eff57b;
/* rgb */ color: rgb(239, 245, 123);
/* oklch */ color: oklch(94.1% 0.146 111.4);

Tailwind

colors: {
  custom: {
    50: '#f6f8a4',
    500: '#eff57b',
    950: '#000000',
  },
}

SCSS

$custom: #eff57b;
$custom-light: #f6f8a4;
$custom-dark: #000000;

JSON

{
  "hex": "#eff57b",
  "rgb": {
    "r": 239,
    "g": 245,
    "b": 123
  },
  "hsl": {
    "h": 62.951,
    "s": 85.915,
    "l": 72.157
  },
  "oklch": {
    "l": 0.94121,
    "c": 0.14555,
    "h": 111.4
  },
  "luminance": 0.85086
}

Semantic roles & 50–950 ramp

primary

#EFF57B

secondary

#4B44D0

accent

#03E20E

background

#FFFFFC

surface

#FFFEF6

border

#D7D6D0

text

#17170F

muted

#858580

Preview Lab

Preview with #EFF57B

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

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