#EFFC65#EFFC65

#EFFC65 is a very light, vivid yellow. Relative luminance 0.889; OKLCH L 95.4% C 0.172 H 113.8°. Best body text is #000000 at 18.78:1 contrast (WCAG AA passes).

Color values

HEX	#EFFC65
RGB	rgb(239, 252, 101)
HSL	hsl(65, 96%, 69%)
HSV	hsv(65, 60%, 99%)
CMYK	cmyk(5.2%, 0%, 59.9%, 1.2%)
CIE-LAB	lab(95.54, -23.41, 68.81)
CIE-LCH	lch(95.54, 72.69, 108.78°)
OKLab	oklab(95.35% -0.0695 0.1576)
OKLCH	oklch(95.35% 0.172 113.8)
XYZ	xyz(72.7577, 88.9124, 25.6384)
Luminance	0.8891 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFFC65 #7265FC

analogous

#FCBE65 #EFFC65 #A3FC65

triadic

#EFFC65 #65EFFC #FC65EF

tetradic

#EFFC65 #65FCBE #7265FC #FC65A3

square

#EFFC65 #65FCBE #7265FC #FC65A3

split-complementary

#EFFC65 #65A3FC #BE65FC

monochromatic

#CFE204 #E9FB29 #EFFC65 #F5FDA1 #FBFEDD

Accessibility & contrast

On white

1.12

#EFFC65 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.78

#EFFC65 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFFC65

18.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFFC65	#FFFFFF	#000000	##000000
##EFFC65	1.00	1.12	18.78	18.78
#FFFFFF	1.12	1.00	21.00	21.00
#000000	18.78	21.00	1.00	1.00
##000000	18.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF153

Deuteranopia (green-blind)

#FFF46F

Tritanopia (blue-blind)

#FDEEDC

Achromatopsia (no color)

#F2F2F2

Design tokens & code

CSS

--color: #effc65;
/* rgb */ color: rgb(239, 252, 101);
/* oklch */ color: oklch(95.4% 0.172 113.8);

Tailwind

colors: {
  custom: {
    50: '#f7fd97',
    500: '#effc65',
    950: '#000000',
  },
}

SCSS

$custom: #effc65;
$custom-light: #f7fd97;
$custom-dark: #000000;

JSON

{
  "hex": "#effc65",
  "rgb": {
    "r": 239,
    "g": 252,
    "b": 101
  },
  "hsl": {
    "h": 65.166,
    "s": 96.178,
    "l": 69.216
  },
  "oklch": {
    "l": 0.95351,
    "c": 0.17226,
    "h": 113.8
  },
  "luminance": 0.88911
}

Semantic roles & 50–950 ramp

primary

#EFFC65

secondary

#3D2FD6

accent

#00E614

background

#FFFFFC

surface

#FFFFF5

border

#D7D7CF

text

#18170E

muted

#86857F

Preview Lab

Preview with #EFFC65

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

Preview Lab → · Contrast checker → · Palette generator →