#EFFB65#EFFB65

#EFFB65 is a very light, vivid yellow. Relative luminance 0.883; OKLCH L 95.1% C 0.171 H 113.5°. Best body text is #000000 at 18.66:1 contrast (WCAG AA passes).

Color values

HEX	#EFFB65
RGB	rgb(239, 251, 101)
HSL	hsl(65, 95%, 69%)
HSV	hsv(65, 60%, 98%)
CMYK	cmyk(4.8%, 0%, 59.8%, 1.6%)
CIE-LAB	lab(95.28, -22.93, 68.53)
CIE-LCH	lch(95.28, 72.27, 108.50°)
OKLab	oklab(95.14% -0.0682 0.157)
OKLCH	oklch(95.14% 0.171 113.5)
XYZ	xyz(72.4445, 88.2860, 25.5340)
Luminance	0.8829 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFFB65 #7165FB

analogous

#FBBC65 #EFFB65 #A4FB65

triadic

#EFFB65 #65EFFB #FB65EF

tetradic

#EFFB65 #65FBBC #7165FB #FB65A4

square

#EFFB65 #65FBBC #7165FB #FB65A4

split-complementary

#EFFB65 #65A4FB #BC65FB

monochromatic

#CEE006 #E9F929 #EFFB65 #F5FDA1 #FBFEDC

Accessibility & contrast

On white

1.13

#EFFB65 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.66

#EFFB65 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFFB65

18.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFFB65	#FFFFFF	#000000	##000000
##EFFB65	1.00	1.13	18.66	18.66
#FFFFFF	1.13	1.00	21.00	21.00
#000000	18.66	21.00	1.00	1.00
##000000	18.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF053

Deuteranopia (green-blind)

#FFF36E

Tritanopia (blue-blind)

#FDEDDB

Achromatopsia (no color)

#F1F1F1

Design tokens & code

CSS

--color: #effb65;
/* rgb */ color: rgb(239, 251, 101);
/* oklch */ color: oklch(95.1% 0.171 113.5);

Tailwind

colors: {
  custom: {
    50: '#f7fc97',
    500: '#effb65',
    950: '#000000',
  },
}

SCSS

$custom: #effb65;
$custom-light: #f7fc97;
$custom-dark: #000000;

JSON

{
  "hex": "#effb65",
  "rgb": {
    "r": 239,
    "g": 251,
    "b": 101
  },
  "hsl": {
    "h": 64.8,
    "s": 94.937,
    "l": 69.02
  },
  "oklch": {
    "l": 0.95141,
    "c": 0.17116,
    "h": 113.5
  },
  "luminance": 0.88285
}

Semantic roles & 50–950 ramp

primary

#EFFB65

secondary

#3C2FD5

accent

#00E612

background

#FFFFFC

surface

#FFFFF5

border

#D7D7CF

text

#18170E

muted

#86857F

Preview Lab

Preview with #EFFB65

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

Preview Lab → · Contrast checker → · Palette generator →