#EFCF54#EFCF54

#EFCF54 is a very light, vivid yellow. Relative luminance 0.636; OKLCH L 85.9% C 0.144 H 94.5°. Best body text is #000000 at 13.72:1 contrast (WCAG AA passes).

Color values

HEX	#EFCF54
RGB	rgb(239, 207, 84)
HSL	hsl(48, 83%, 63%)
HSV	hsv(48, 65%, 94%)
CMYK	cmyk(0%, 13.4%, 64.9%, 6.3%)
CIE-LAB	lab(83.77, -2.28, 63.21)
CIE-LCH	lch(83.77, 63.25, 92.06°)
OKLab	oklab(85.93% -0.0113 0.1434)
OKLCH	oklch(85.93% 0.144 94.5)
XYZ	xyz(59.5125, 63.6196, 17.5309)
Luminance	0.6362 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFCF54 #5474EF

analogous

#EF8154 #EFCF54 #C1EF54

triadic

#EFCF54 #54EFCF #CF54EF

tetradic

#EFCF54 #54EF81 #5474EF #EF54C1

square

#EFCF54 #54EF81 #5474EF #EF54C1

split-complementary

#EFCF54 #54C1EF #8154EF

monochromatic

#B79511 #EABF1C #EFCF54 #F4DF8C #F9EEC4

Accessibility & contrast

On white

1.53

#EFCF54 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.72

#EFCF54 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFCF54

13.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFCF54	#FFFFFF	#000000	##000000
##EFCF54	1.00	1.53	13.72	13.72
#FFFFFF	1.53	1.00	21.00	21.00
#000000	13.72	21.00	1.00	1.00
##000000	13.72	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E3CB45

Deuteranopia (green-blind)

#EBD55A

Tritanopia (blue-blind)

#FFC0B5

Achromatopsia (no color)

#D1D1D1

Design tokens & code

CSS

--color: #efcf54;
/* rgb */ color: rgb(239, 207, 84);
/* oklch */ color: oklch(85.9% 0.144 94.5);

Tailwind

colors: {
  custom: {
    50: '#f8dd89',
    500: '#efcf54',
    950: '#000000',
  },
}

SCSS

$custom: #efcf54;
$custom-light: #f8dd89;
$custom-dark: #000000;

JSON

{
  "hex": "#efcf54",
  "rgb": {
    "r": 239,
    "g": 207,
    "b": 84
  },
  "hsl": {
    "h": 47.613,
    "s": 82.888,
    "l": 63.333
  },
  "oklch": {
    "l": 0.85935,
    "c": 0.14381,
    "h": 94.5
  },
  "luminance": 0.63616
}

Semantic roles & 50–950 ramp

primary

#EFCF54

secondary

#314CB7

accent

#33DF06

background

#FFFEFC

surface

#FFFCF4

border

#D7D5CE

text

#18150C

muted

#86847F

Preview Lab

Preview with #EFCF54

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

Preview Lab → · Contrast checker → · Palette generator →