#EFF15B#EFF15B

#EFF15B is a very light, vivid yellow. Relative luminance 0.820; OKLCH L 93.0% C 0.168 H 110.0°. Best body text is #000000 at 17.40:1 contrast (WCAG AA passes).

Color values

HEX	#EFF15B
RGB	rgb(239, 241, 91)
HSL	hsl(61, 84%, 65%)
HSV	hsv(61, 62%, 95%)
CMYK	cmyk(0.8%, 0%, 62.2%, 5.5%)
CIE-LAB	lab(92.58, -18.78, 69.68)
CIE-LCH	lch(92.58, 72.17, 105.08°)
OKLab	oklab(92.96% -0.0575 0.1581)
OKLCH	oklch(92.96% 0.168 110)
XYZ	xyz(68.9423, 82.0185, 22.0950)
Luminance	0.8202 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF15B #5D5BF1

analogous

#F1A85B #EFF15B #A4F15B

triadic

#EFF15B #5BEFF1 #F15BEF

tetradic

#EFF15B #5BF1A8 #5D5BF1 #F15BA4

square

#EFF15B #5BF1A8 #5D5BF1 #F15BA4

split-complementary

#EFF15B #5BA4F1 #A85BF1

monochromatic

#BFC110 #E9EC23 #EFF15B #F5F693 #FAFBCC

Accessibility & contrast

On white

1.21

#EFF15B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.40

#EFF15B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF15B

17.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF15B	#FFFFFF	#000000	##000000
##EFF15B	1.00	1.21	17.40	17.40
#FFFFFF	1.21	1.00	21.00	21.00
#000000	17.40	21.00	1.00	1.00
##000000	17.40	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE748

Deuteranopia (green-blind)

#FFEC65

Tritanopia (blue-blind)

#FFE3D2

Achromatopsia (no color)

#EAEAEA

Design tokens & code

CSS

--color: #eff15b;
/* rgb */ color: rgb(239, 241, 91);
/* oklch */ color: oklch(93.0% 0.168 110.0);

Tailwind

colors: {
  custom: {
    50: '#f7f590',
    500: '#eff15b',
    950: '#000000',
  },
}

SCSS

$custom: #eff15b;
$custom-light: #f7f590;
$custom-dark: #000000;

JSON

{
  "hex": "#eff15b",
  "rgb": {
    "r": 239,
    "g": 241,
    "b": 91
  },
  "hsl": {
    "h": 60.8,
    "s": 84.27,
    "l": 65.098
  },
  "oklch": {
    "l": 0.92958,
    "c": 0.16822,
    "h": 110
  },
  "luminance": 0.82017
}

Semantic roles & 50–950 ramp

primary

#EFF15B

secondary

#3331BF

accent

#05E108

background

#FFFFFC

surface

#FFFEF4

border

#D7D6CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #EFF15B

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

Preview Lab → · Contrast checker → · Palette generator →