#EFF556#EFF556

#EFF556 is a very light, vivid yellow. Relative luminance 0.843; OKLCH L 93.8% C 0.176 H 111.4°. Best body text is #000000 at 17.87:1 contrast (WCAG AA passes).

Color values

HEX	#EFF556
RGB	rgb(239, 245, 86)
HSL	hsl(62, 89%, 65%)
HSV	hsv(62, 65%, 96%)
CMYK	cmyk(2.4%, 0%, 64.9%, 3.9%)
CIE-LAB	lab(93.59, -21.00, 72.68)
CIE-LCH	lch(93.59, 75.65, 106.12°)
OKLab	oklab(93.75% -0.0643 0.1637)
OKLCH	oklch(93.75% 0.176 111.4)
XYZ	xyz(69.9308, 84.3291, 21.3957)
Luminance	0.8433 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF556 #5C56F5

analogous

#F5AB56 #EFF556 #A0F556

triadic

#EFF556 #56EFF5 #F556EF

tetradic

#EFF556 #56F5AB #5C56F5 #F556A0

square

#EFF556 #56F5AB #5C56F5 #F556A0

split-complementary

#EFF556 #56A0F5 #AB56F5

monochromatic

#BEC50C #EAF21C #EFF556 #F4F890 #FAFCCA

Accessibility & contrast

On white

1.18

#EFF556 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.87

#EFF556 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF556

17.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF556	#FFFFFF	#000000	##000000
##EFF556	1.00	1.18	17.87	17.87
#FFFFFF	1.18	1.00	21.00	21.00
#000000	17.87	21.00	1.00	1.00
##000000	17.87	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEA40

Deuteranopia (green-blind)

#FFEF61

Tritanopia (blue-blind)

#FFE7D5

Achromatopsia (no color)

#EDEDED

Design tokens & code

CSS

--color: #eff556;
/* rgb */ color: rgb(239, 245, 86);
/* oklch */ color: oklch(93.8% 0.176 111.4);

Tailwind

colors: {
  custom: {
    50: '#f8f88d',
    500: '#eff556',
    950: '#000000',
  },
}

SCSS

$custom: #eff556;
$custom-light: #f8f88d;
$custom-dark: #000000;

JSON

{
  "hex": "#eff556",
  "rgb": {
    "r": 239,
    "g": 245,
    "b": 86
  },
  "hsl": {
    "h": 62.264,
    "s": 88.827,
    "l": 64.902
  },
  "oklch": {
    "l": 0.93754,
    "c": 0.17584,
    "h": 111.4
  },
  "luminance": 0.84327
}

Semantic roles & 50–950 ramp

primary

#EFF556

secondary

#332DC2

accent

#00E509

background

#FFFFFC

surface

#FFFEF4

border

#D7D6CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #EFF556

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

Preview Lab → · Contrast checker → · Palette generator →