#EFFF67#EFFF67

#EFFF67 is a very light, vivid yellow. Relative luminance 0.908; OKLCH L 96.0% C 0.174 H 114.8°. Best body text is #000000 at 19.17:1 contrast (WCAG AA passes).

Color values

HEX	#EFFF67
RGB	rgb(239, 255, 103)
HSL	hsl(66, 100%, 70%)
HSV	hsv(66, 60%, 100%)
CMYK	cmyk(6.3%, 0%, 59.6%, 0%)
CIE-LAB	lab(96.35, -24.69, 68.87)
CIE-LCH	lch(96.35, 73.16, 109.72°)
OKLab	oklab(96% -0.073 0.158)
OKLCH	oklch(96% 0.174 114.8)
XYZ	xyz(73.8064, 90.8512, 26.4773)
Luminance	0.9085 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFFF67 #7767FF

analogous

#FFC367 #EFFF67 #A3FF67

triadic

#EFFF67 #67EFFF #FF67EF

tetradic

#EFFF67 #67FFC3 #7767FF #FF67A3

square

#EFFF67 #67FFC3 #7767FF #FF67A3

split-complementary

#EFFF67 #67A3FF #C367FF

monochromatic

#D3EC00 #E9FF2A #EFFF67 #F5FFA4 #FCFFE0

Accessibility & contrast

On white

1.10

#EFFF67 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

19.17

#EFFF67 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFFF67

19.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFFF67	#FFFFFF	#000000	##000000
##EFFF67	1.00	1.10	19.17	19.17
#FFFFFF	1.10	1.00	21.00	21.00
#000000	19.17	21.00	1.00	1.00
##000000	19.17	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF355

Deuteranopia (green-blind)

#FFF671

Tritanopia (blue-blind)

#FDF1DF

Achromatopsia (no color)

#F4F4F4

Design tokens & code

CSS

--color: #efff67;
/* rgb */ color: rgb(239, 255, 103);
/* oklch */ color: oklch(96.0% 0.174 114.8);

Tailwind

colors: {
  custom: {
    50: '#f7ff98',
    500: '#efff67',
    950: '#000000',
  },
}

SCSS

$custom: #efff67;
$custom-light: #f7ff98;
$custom-dark: #000000;

JSON

{
  "hex": "#efff67",
  "rgb": {
    "r": 239,
    "g": 255,
    "b": 103
  },
  "hsl": {
    "h": 66.316,
    "s": 100,
    "l": 70.196
  },
  "oklch": {
    "l": 0.96,
    "c": 0.174,
    "h": 114.8
  },
  "luminance": 0.9085
}

Semantic roles & 50–950 ramp

primary

#EFFF67

secondary

#4230DA

accent

#00E618

background

#FFFFFC

surface

#FFFFF5

border

#D7D7CF

text

#18170E

muted

#86857F

Preview Lab

Preview with #EFFF67

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

Preview Lab → · Contrast checker → · Palette generator →