#EFCB57#EFCB57

#EFCB57 is a very light, vivid yellow. Relative luminance 0.618; OKLCH L 85.2% C 0.139 H 91.9°. Best body text is #000000 at 13.35:1 contrast (WCAG AA passes).

Color values

HEX	#EFCB57
RGB	rgb(239, 203, 87)
HSL	hsl(46, 83%, 64%)
HSV	hsv(46, 64%, 94%)
CMYK	cmyk(0%, 15.1%, 63.6%, 6.3%)
CIE-LAB	lab(82.78, -0.05, 60.87)
CIE-LCH	lch(82.78, 60.87, 90.04°)
OKLab	oklab(85.17% -0.0046 0.1388)
OKLCH	oklch(85.17% 0.139 91.9)
XYZ	xyz(58.6757, 61.7539, 17.8441)
Luminance	0.6175 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFCB57 #577BEF

analogous

#EF7F57 #EFCB57 #C7EF57

triadic

#EFCB57 #57EFCB #CB57EF

tetradic

#EFCB57 #57EF7F #577BEF #EF57C7

square

#EFCB57 #57EF7F #577BEF #EF57C7

split-complementary

#EFCB57 #57C7EF #7F57EF

monochromatic

#BA9212 #EABA1F #EFCB57 #F4DC8F #FAEEC7

Accessibility & contrast

On white

1.57

#EFCB57 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.35

#EFCB57 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFCB57

13.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFCB57	#FFFFFF	#000000	##000000
##EFCB57	1.00	1.57	13.35	13.35
#FFFFFF	1.57	1.00	21.00	21.00
#000000	13.35	21.00	1.00	1.00
##000000	13.35	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#DFC84A

Deuteranopia (green-blind)

#E8D25C

Tritanopia (blue-blind)

#FFBCB2

Achromatopsia (no color)

#CECECE

Design tokens & code

CSS

--color: #efcb57;
/* rgb */ color: rgb(239, 203, 87);
/* oklch */ color: oklch(85.2% 0.139 91.9);

Tailwind

colors: {
  custom: {
    50: '#f8da8b',
    500: '#efcb57',
    950: '#000000',
  },
}

SCSS

$custom: #efcb57;
$custom-light: #f8da8b;
$custom-dark: #000000;

JSON

{
  "hex": "#efcb57",
  "rgb": {
    "r": 239,
    "g": 203,
    "b": 87
  },
  "hsl": {
    "h": 45.789,
    "s": 82.609,
    "l": 63.922
  },
  "oklch": {
    "l": 0.85165,
    "c": 0.13891,
    "h": 91.9
  },
  "luminance": 0.61751
}

Semantic roles & 50–950 ramp

primary

#EFCB57

secondary

#3151B9

accent

#3ADF06

background

#FFFEFC

surface

#FFFBF4

border

#D7D4CE

text

#18140C

muted

#86837F

Preview Lab

Preview with #EFCB57

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

Preview Lab → · Contrast checker → · Palette generator →