#EFCF58#EFCF58

#EFCF58 is a very light, vivid yellow. Relative luminance 0.637; OKLCH L 86.0% C 0.141 H 94.2°. Best body text is #000000 at 13.74:1 contrast (WCAG AA passes).

Color values

HEX	#EFCF58
RGB	rgb(239, 207, 88)
HSL	hsl(47, 83%, 64%)
HSV	hsv(47, 63%, 94%)
CMYK	cmyk(0%, 13.4%, 63.2%, 6.3%)
CIE-LAB	lab(83.80, -2.04, 61.54)
CIE-LCH	lch(83.80, 61.57, 91.90°)
OKLab	oklab(85.97% -0.0102 0.1404)
OKLCH	oklch(85.97% 0.141 94.2)
XYZ	xyz(59.6736, 63.6840, 18.3797)
Luminance	0.6368 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFCF58 #5878EF

analogous

#EF8458 #EFCF58 #C4EF58

triadic

#EFCF58 #58EFCF #CF58EF

tetradic

#EFCF58 #58EF84 #5878EF #EF58C4

square

#EFCF58 #58EF84 #5878EF #EF58C4

split-complementary

#EFCF58 #58C4EF #8458EF

monochromatic

#BB9712 #EABF20 #EFCF58 #F4DF90 #FAEFC8

Accessibility & contrast

On white

1.53

#EFCF58 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.74

#EFCF58 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFCF58

13.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFCF58	#FFFFFF	#000000	##000000
##EFCF58	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)

#E3CB4A

Deuteranopia (green-blind)

#EBD55E

Tritanopia (blue-blind)

#FFC0B6

Achromatopsia (no color)

#D1D1D1

Design tokens & code

CSS

--color: #efcf58;
/* rgb */ color: rgb(239, 207, 88);
/* oklch */ color: oklch(86.0% 0.141 94.2);

Tailwind

colors: {
  custom: {
    50: '#f8dd8c',
    500: '#efcf58',
    950: '#000000',
  },
}

SCSS

$custom: #efcf58;
$custom-light: #f8dd8c;
$custom-dark: #000000;

JSON

{
  "hex": "#efcf58",
  "rgb": {
    "r": 239,
    "g": 207,
    "b": 88
  },
  "hsl": {
    "h": 47.285,
    "s": 82.514,
    "l": 64.118
  },
  "oklch": {
    "l": 0.85973,
    "c": 0.14077,
    "h": 94.2
  },
  "luminance": 0.63681
}

Semantic roles & 50–950 ramp

primary

#EFCF58

secondary

#324EBA

accent

#34DF07

background

#FFFEFC

surface

#FFFCF4

border

#D7D5CE

text

#18150C

muted

#86847F

Preview Lab

Preview with #EFCF58

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

Preview Lab → · Contrast checker → · Palette generator →