#EFF057#EFF057

#EFF057 is a very light, vivid yellow. Relative luminance 0.814; OKLCH L 92.7% C 0.170 H 109.7°. Best body text is #000000 at 17.27:1 contrast (WCAG AA passes).

Color values

HEX	#EFF057
RGB	rgb(239, 240, 87)
HSL	hsl(60, 84%, 64%)
HSV	hsv(60, 64%, 94%)
CMYK	cmyk(0.4%, 0%, 63.7%, 5.9%)
CIE-LAB	lab(92.29, -18.54, 70.95)
CIE-LCH	lch(92.29, 73.33, 104.64°)
OKLab	oklab(92.72% -0.0572 0.1602)
OKLCH	oklch(92.72% 0.17 109.7)
XYZ	xyz(68.4792, 81.3609, 21.1119)
Luminance	0.8136 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF057 #5857F0

analogous

#F0A557 #EFF057 #A3F057

triadic

#EFF057 #57EFF0 #F057EF

tetradic

#EFF057 #57F0A5 #5857F0 #F057A3

square

#EFF057 #57F0A5 #5857F0 #F057A3

split-complementary

#EFF057 #57A3F0 #A557F0

monochromatic

#BBBC11 #EAEB1F #EFF057 #F4F58F #FAFAC7

Accessibility & contrast

On white

1.22

#EFF057 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.27

#EFF057 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF057

17.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF057	#FFFFFF	#000000	##000000
##EFF057	1.00	1.22	17.27	17.27
#FFFFFF	1.22	1.00	21.00	21.00
#000000	17.27	21.00	1.00	1.00
##000000	17.27	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE642

Deuteranopia (green-blind)

#FFEB61

Tritanopia (blue-blind)

#FFE2D1

Achromatopsia (no color)

#E9E9E9

Design tokens & code

CSS

--color: #eff057;
/* rgb */ color: rgb(239, 240, 87);
/* oklch */ color: oklch(92.7% 0.170 109.7);

Tailwind

colors: {
  custom: {
    50: '#f8f48e',
    500: '#eff057',
    950: '#000000',
  },
}

SCSS

$custom: #eff057;
$custom-light: #f8f48e;
$custom-dark: #000000;

JSON

{
  "hex": "#eff057",
  "rgb": {
    "r": 239,
    "g": 240,
    "b": 87
  },
  "hsl": {
    "h": 60.392,
    "s": 83.607,
    "l": 64.118
  },
  "oklch": {
    "l": 0.92717,
    "c": 0.1701,
    "h": 109.7
  },
  "luminance": 0.81359
}

Semantic roles & 50–950 ramp

primary

#EFF057

secondary

#3231BA

accent

#05E007

background

#FFFFFC

surface

#FFFEF4

border

#D7D6CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #EFF057

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

Preview Lab → · Contrast checker → · Palette generator →