#EFF05E#EFF05E

#EFF05E is a very light, vivid yellow. Relative luminance 0.815; OKLCH L 92.8% C 0.165 H 109.6°. Best body text is #000000 at 17.30:1 contrast (WCAG AA passes).

Color values

HEX	#EFF05E
RGB	rgb(239, 240, 94)
HSL	hsl(60, 83%, 65%)
HSV	hsv(60, 61%, 94%)
CMYK	cmyk(0.4%, 0%, 60.8%, 5.9%)
CIE-LAB	lab(92.35, -18.11, 68.23)
CIE-LCH	lch(92.35, 70.59, 104.87°)
OKLab	oklab(92.78% -0.0553 0.1554)
OKLCH	oklch(92.78% 0.165 109.6)
XYZ	xyz(68.7792, 81.4809, 22.6918)
Luminance	0.8148 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF05E #5F5EF0

analogous

#F0A85E #EFF05E #A6F05E

triadic

#EFF05E #5EEFF0 #F05EEF

tetradic

#EFF05E #5EF0A8 #5F5EF0 #F05EA6

square

#EFF05E #5EF0A8 #5F5EF0 #F05EA6

split-complementary

#EFF05E #5EA6F0 #A85EF0

monochromatic

#C0C212 #E9EB26 #EFF05E #F5F596 #FAFACE

Accessibility & contrast

On white

1.21

#EFF05E on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.30

#EFF05E on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF05E

17.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF05E	#FFFFFF	#000000	##000000
##EFF05E	1.00	1.21	17.30	17.30
#FFFFFF	1.21	1.00	21.00	21.00
#000000	17.30	21.00	1.00	1.00
##000000	17.30	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE64C

Deuteranopia (green-blind)

#FFEB67

Tritanopia (blue-blind)

#FFE2D1

Achromatopsia (no color)

#E9E9E9

Design tokens & code

CSS

--color: #eff05e;
/* rgb */ color: rgb(239, 240, 94);
/* oklch */ color: oklch(92.8% 0.165 109.6);

Tailwind

colors: {
  custom: {
    50: '#f7f492',
    500: '#eff05e',
    950: '#000000',
  },
}

SCSS

$custom: #eff05e;
$custom-light: #f7f492;
$custom-dark: #000000;

JSON

{
  "hex": "#eff05e",
  "rgb": {
    "r": 239,
    "g": 240,
    "b": 94
  },
  "hsl": {
    "h": 60.411,
    "s": 82.955,
    "l": 65.49
  },
  "oklch": {
    "l": 0.92776,
    "c": 0.16498,
    "h": 109.6
  },
  "luminance": 0.81479
}

Semantic roles & 50–950 ramp

primary

#EFF05E

secondary

#3433BF

accent

#06DF08

background

#FFFFFC

surface

#FFFEF4

border

#D7D6CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #EFF05E

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

Preview Lab → · Contrast checker → · Palette generator →