#EFFE5F#EFFE5F

#EFFE5F is a very light, vivid yellow. Relative luminance 0.901; OKLCH L 95.7% C 0.179 H 114.4°. Best body text is #000000 at 19.01:1 contrast (WCAG AA passes).

Color values

HEX	#EFFE5F
RGB	rgb(239, 254, 95)
HSL	hsl(66, 99%, 68%)
HSV	hsv(66, 63%, 100%)
CMYK	cmyk(5.9%, 0%, 62.6%, 0.4%)
CIE-LAB	lab(96.02, -24.74, 71.73)
CIE-LCH	lch(96.02, 75.88, 109.03°)
OKLab	oklab(95.72% -0.0739 0.163)
OKLCH	oklch(95.72% 0.179 114.4)
XYZ	xyz(73.1058, 90.0618, 24.3568)
Luminance	0.9006 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFFE5F #6E5FFE

analogous

#FEBD5F #EFFE5F #9FFE5F

triadic

#EFFE5F #5FEFFE #FE5FEF

tetradic

#EFFE5F #5FFEBD #6E5FFE #FE5F9F

square

#EFFE5F #5FFEBD #6E5FFE #FE5F9F

split-complementary

#EFFE5F #5F9FFE #BD5FFE

monochromatic

#CCE101 #E9FE22 #EFFE5F #F5FE9C #FBFFD9

Accessibility & contrast

On white

1.10

#EFFE5F on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

19.01

#EFFE5F on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFFE5F

19.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFFE5F	#FFFFFF	#000000	##000000
##EFFE5F	1.00	1.10	19.01	19.01
#FFFFFF	1.10	1.00	21.00	21.00
#000000	19.01	21.00	1.00	1.00
##000000	19.01	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF24A

Deuteranopia (green-blind)

#FFF56A

Tritanopia (blue-blind)

#FEF0DD

Achromatopsia (no color)

#F4F4F4

Design tokens & code

CSS

--color: #effe5f;
/* rgb */ color: rgb(239, 254, 95);
/* oklch */ color: oklch(95.7% 0.179 114.4);

Tailwind

colors: {
  custom: {
    50: '#f7fe93',
    500: '#effe5f',
    950: '#000000',
  },
}

SCSS

$custom: #effe5f;
$custom-light: #f7fe93;
$custom-dark: #000000;

JSON

{
  "hex": "#effe5f",
  "rgb": {
    "r": 239,
    "g": 254,
    "b": 95
  },
  "hsl": {
    "h": 65.66,
    "s": 98.758,
    "l": 68.431
  },
  "oklch": {
    "l": 0.95719,
    "c": 0.17894,
    "h": 114.4
  },
  "luminance": 0.90061
}

Semantic roles & 50–950 ramp

primary

#EFFE5F

secondary

#3A29D8

accent

#00E616

background

#FFFFFC

surface

#FFFFF5

border

#D7D7CF

text

#18170E

muted

#86857F

Preview Lab

Preview with #EFFE5F

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

Preview Lab → · Contrast checker → · Palette generator →