#EFFA63#EFFA63

#EFFA63 is a very light, vivid yellow. Relative luminance 0.876; OKLCH L 94.9% C 0.172 H 113.1°. Best body text is #000000 at 18.52:1 contrast (WCAG AA passes).

Color values

HEX	#EFFA63
RGB	rgb(239, 250, 99)
HSL	hsl(64, 94%, 68%)
HSV	hsv(64, 60%, 98%)
CMYK	cmyk(4.4%, 0%, 60.4%, 2%)
CIE-LAB	lab(95.00, -22.59, 69.05)
CIE-LCH	lch(95.00, 72.65, 108.12°)
OKLab	oklab(94.91% -0.0674 0.1578)
OKLCH	oklch(94.91% 0.172 113.1)
XYZ	xyz(72.0361, 87.6242, 24.9204)
Luminance	0.8762 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFFA63 #6E63FA

analogous

#FAB963 #EFFA63 #A3FA63

triadic

#EFFA63 #63EFFA #FA63EF

tetradic

#EFFA63 #63FAB9 #6E63FA #FA63A3

square

#EFFA63 #63FAB9 #6E63FA #FA63A3

split-complementary

#EFFA63 #63A3FA #B963FA

monochromatic

#CCDC07 #E9F828 #EFFA63 #F5FC9E #FBFEDA

Accessibility & contrast

On white

1.13

#EFFA63 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.52

#EFFA63 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFFA63

18.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFFA63	#FFFFFF	#000000	##000000
##EFFA63	1.00	1.13	18.52	18.52
#FFFFFF	1.13	1.00	21.00	21.00
#000000	18.52	21.00	1.00	1.00
##000000	18.52	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEF51

Deuteranopia (green-blind)

#FFF26D

Tritanopia (blue-blind)

#FEECDA

Achromatopsia (no color)

#F1F1F1

Design tokens & code

CSS

--color: #effa63;
/* rgb */ color: rgb(239, 250, 99);
/* oklch */ color: oklch(94.9% 0.172 113.1);

Tailwind

colors: {
  custom: {
    50: '#f7fb95',
    500: '#effa63',
    950: '#000000',
  },
}

SCSS

$custom: #effa63;
$custom-light: #f7fb95;
$custom-dark: #000000;

JSON

{
  "hex": "#effa63",
  "rgb": {
    "r": 239,
    "g": 250,
    "b": 99
  },
  "hsl": {
    "h": 64.371,
    "s": 93.789,
    "l": 68.431
  },
  "oklch": {
    "l": 0.94912,
    "c": 0.17163,
    "h": 113.1
  },
  "luminance": 0.87623
}

Semantic roles & 50–950 ramp

primary

#EFFA63

secondary

#3A2ED4

accent

#00E611

background

#FFFFFC

surface

#FFFFF5

border

#D7D7CF

text

#18170E

muted

#86857F

Preview Lab

Preview with #EFFA63

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

Preview Lab → · Contrast checker → · Palette generator →