#EFCD31#EFCD31

#EFCD31 is a very light, vivid yellow. Relative luminance 0.622; OKLCH L 85.3% C 0.163 H 95.8°. Best body text is #000000 at 13.45:1 contrast (WCAG AA passes).

Color values

HEX	#EFCD31
RGB	rgb(239, 205, 49)
HSL	hsl(49, 86%, 56%)
HSV	hsv(49, 79%, 94%)
CMYK	cmyk(0%, 14.2%, 79.5%, 6.3%)
CIE-LAB	lab(83.04, -2.83, 75.23)
CIE-LCH	lch(83.04, 75.29, 92.16°)
OKLab	oklab(85.29% -0.0165 0.1626)
OKLCH	oklch(85.29% 0.163 95.8)
XYZ	xyz(57.9855, 62.2384, 11.8641)
Luminance	0.6223 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFCD31 #3153EF

analogous

#EF6E31 #EFCD31 #B2EF31

triadic

#EFCD31 #31EFCD #CD31EF

tetradic

#EFCD31 #31EF6E #3153EF #EF31B2

square

#EFCD31 #31EF6E #3153EF #EF31B2

split-complementary

#EFCD31 #31B2EF #6E31EF

monochromatic

#9A800C #D2B010 #EFCD31 #F3DB6A #F8E9A3

Accessibility & contrast

On white

1.56

#EFCD31 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.45

#EFCD31 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFCD31

13.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFCD31	#FFFFFF	#000000	##000000
##EFCD31	1.00	1.56	13.45	13.45
#FFFFFF	1.56	1.00	21.00	21.00
#000000	13.45	21.00	1.00	1.00
##000000	13.45	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E3C900

Deuteranopia (green-blind)

#ECD33C

Tritanopia (blue-blind)

#FFBCB0

Achromatopsia (no color)

#CFCFCF

Design tokens & code

CSS

--color: #efcd31;
/* rgb */ color: rgb(239, 205, 49);
/* oklch */ color: oklch(85.3% 0.163 95.8);

Tailwind

colors: {
  custom: {
    50: '#f9db77',
    500: '#efcd31',
    950: '#000000',
  },
}

SCSS

$custom: #efcd31;
$custom-light: #f9db77;
$custom-dark: #000000;

JSON

{
  "hex": "#efcd31",
  "rgb": {
    "r": 239,
    "g": 205,
    "b": 49
  },
  "hsl": {
    "h": 49.263,
    "s": 85.586,
    "l": 56.471
  },
  "oklch": {
    "l": 0.8529,
    "c": 0.16345,
    "h": 95.8
  },
  "luminance": 0.62235
}

Semantic roles & 50–950 ramp

primary

#EFCD31

secondary

#273C9D

accent

#51FC2C

background

#FFFEFB

surface

#FFFBF1

border

#D7D4CB

text

#18140A

muted

#86837D

Preview Lab

Preview with #EFCD31

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

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