#EFF55C#EFF55C

#EFF55C is a very light, vivid yellow. Relative luminance 0.844; OKLCH L 93.8% C 0.172 H 111.4°. Best body text is #000000 at 17.89:1 contrast (WCAG AA passes).

Color values

HEX	#EFF55C
RGB	rgb(239, 245, 92)
HSL	hsl(62, 88%, 66%)
HSV	hsv(62, 62%, 96%)
CMYK	cmyk(2.4%, 0%, 62.4%, 3.9%)
CIE-LAB	lab(93.64, -20.65, 70.40)
CIE-LCH	lch(93.64, 73.36, 106.35°)
OKLab	oklab(93.8% -0.0627 0.1597)
OKLCH	oklch(93.8% 0.172 111.4)
XYZ	xyz(70.1828, 84.4299, 22.7227)
Luminance	0.8443 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF55C #625CF5

analogous

#F5AE5C #EFF55C #A2F55C

triadic

#EFF55C #5CEFF5 #F55CEF

tetradic

#EFF55C #5CF5AE #625CF5 #F55CA2

square

#EFF55C #5CF5AE #625CF5 #F55CA2

split-complementary

#EFF55C #5CA2F5 #AE5CF5

monochromatic

#C3CA0C #E9F122 #EFF55C #F5F996 #FAFCCF

Accessibility & contrast

On white

1.17

#EFF55C on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.89

#EFF55C on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF55C

17.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF55C	#FFFFFF	#000000	##000000
##EFF55C	1.00	1.17	17.89	17.89
#FFFFFF	1.17	1.00	21.00	21.00
#000000	17.89	21.00	1.00	1.00
##000000	17.89	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEB48

Deuteranopia (green-blind)

#FFEF66

Tritanopia (blue-blind)

#FEE7D5

Achromatopsia (no color)

#EDEDED

Design tokens & code

CSS

--color: #eff55c;
/* rgb */ color: rgb(239, 245, 92);
/* oklch */ color: oklch(93.8% 0.172 111.4);

Tailwind

colors: {
  custom: {
    50: '#f7f891',
    500: '#eff55c',
    950: '#000000',
  },
}

SCSS

$custom: #eff55c;
$custom-light: #f7f891;
$custom-dark: #000000;

JSON

{
  "hex": "#eff55c",
  "rgb": {
    "r": 239,
    "g": 245,
    "b": 92
  },
  "hsl": {
    "h": 62.353,
    "s": 88.439,
    "l": 66.078
  },
  "oklch": {
    "l": 0.93803,
    "c": 0.17159,
    "h": 111.4
  },
  "luminance": 0.84428
}

Semantic roles & 50–950 ramp

primary

#EFF55C

secondary

#352FC6

accent

#00E509

background

#FFFFFC

surface

#FFFEF4

border

#D7D6CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #EFF55C

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

Preview Lab → · Contrast checker → · Palette generator →