#EFCF59#EFCF59

#EFCF59 is a very light, vivid yellow. Relative luminance 0.637; OKLCH L 86.0% C 0.140 H 94.1°. Best body text is #000000 at 13.74:1 contrast (WCAG AA passes).

Color values

HEX	#EFCF59
RGB	rgb(239, 207, 89)
HSL	hsl(47, 82%, 64%)
HSV	hsv(47, 63%, 94%)
CMYK	cmyk(0%, 13.4%, 62.8%, 6.3%)
CIE-LAB	lab(83.81, -1.98, 61.11)
CIE-LCH	lch(83.81, 61.15, 91.85°)
OKLab	oklab(85.98% -0.0099 0.1396)
OKLCH	oklch(85.98% 0.14 94.1)
XYZ	xyz(59.7154, 63.7007, 18.5993)
Luminance	0.6370 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFCF59 #5979EF

analogous

#EF8459 #EFCF59 #C4EF59

triadic

#EFCF59 #59EFCF #CF59EF

tetradic

#EFCF59 #59EF84 #5979EF #EF59C4

square

#EFCF59 #59EF84 #5979EF #EF59C4

split-complementary

#EFCF59 #59C4EF #8459EF

monochromatic

#BC9712 #EABF21 #EFCF59 #F4DF91 #FAEFC9

Accessibility & contrast

On white

1.53

#EFCF59 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.74

#EFCF59 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFCF59

13.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFCF59	#FFFFFF	#000000	##000000
##EFCF59	1.00	1.53	13.74	13.74
#FFFFFF	1.53	1.00	21.00	21.00
#000000	13.74	21.00	1.00	1.00
##000000	13.74	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E3CB4C

Deuteranopia (green-blind)

#EBD55F

Tritanopia (blue-blind)

#FFC0B6

Achromatopsia (no color)

#D1D1D1

Design tokens & code

CSS

--color: #efcf59;
/* rgb */ color: rgb(239, 207, 89);
/* oklch */ color: oklch(86.0% 0.140 94.1);

Tailwind

colors: {
  custom: {
    50: '#f8dd8c',
    500: '#efcf59',
    950: '#000000',
  },
}

SCSS

$custom: #efcf59;
$custom-light: #f8dd8c;
$custom-dark: #000000;

JSON

{
  "hex": "#efcf59",
  "rgb": {
    "r": 239,
    "g": 207,
    "b": 89
  },
  "hsl": {
    "h": 47.2,
    "s": 82.418,
    "l": 64.314
  },
  "oklch": {
    "l": 0.85982,
    "c": 0.13999,
    "h": 94.1
  },
  "luminance": 0.63698
}

Semantic roles & 50–950 ramp

primary

#EFCF59

secondary

#324FBA

accent

#35DF07

background

#FFFEFC

surface

#FFFCF4

border

#D7D5CE

text

#18150C

muted

#86847F

Preview Lab

Preview with #EFCF59

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

Preview Lab → · Contrast checker → · Palette generator →