#EFDC51#EFDC51

#EFDC51 is a very light, vivid yellow. Relative luminance 0.701; OKLCH L 88.5% C 0.156 H 101.5°. Best body text is #000000 at 15.03:1 contrast (WCAG AA passes).

Color values

HEX	#EFDC51
RGB	rgb(239, 220, 81)
HSL	hsl(53, 83%, 63%)
HSV	hsv(53, 66%, 94%)
CMYK	cmyk(0%, 7.9%, 66.1%, 6.3%)
CIE-LAB	lab(87.06, -9.03, 67.89)
CIE-LCH	lch(87.06, 68.49, 97.58°)
OKLab	oklab(88.54% -0.031 0.1528)
OKLCH	oklch(88.54% 0.156 101.5)
XYZ	xyz(62.6776, 70.1339, 18.0187)
Luminance	0.7013 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFDC51 #5164EF

analogous

#EF8D51 #EFDC51 #B3EF51

triadic

#EFDC51 #51EFDC #DC51EF

tetradic

#EFDC51 #51EF8D #5164EF #EF51B3

square

#EFDC51 #51EF8D #5164EF #EF51B3

split-complementary

#EFDC51 #51B3EF #8D51EF

monochromatic

#B5A111 #EAD119 #EFDC51 #F4E789 #F9F3C1

Accessibility & contrast

On white

1.40

#EFDC51 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

15.03

#EFDC51 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFDC51

15.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFDC51	#FFFFFF	#000000	##000000
##EFDC51	1.00	1.40	15.03	15.03
#FFFFFF	1.40	1.00	21.00	21.00
#000000	15.03	21.00	1.00	1.00
##000000	15.03	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#F0D63E

Deuteranopia (green-blind)

#F5DE59

Tritanopia (blue-blind)

#FFCDBF

Achromatopsia (no color)

#DADADA

Design tokens & code

CSS

--color: #efdc51;
/* rgb */ color: rgb(239, 220, 81);
/* oklch */ color: oklch(88.5% 0.156 101.5);

Tailwind

colors: {
  custom: {
    50: '#f8e689',
    500: '#efdc51',
    950: '#000000',
  },
}

SCSS

$custom: #efdc51;
$custom-light: #f8e689;
$custom-dark: #000000;

JSON

{
  "hex": "#efdc51",
  "rgb": {
    "r": 239,
    "g": 220,
    "b": 81
  },
  "hsl": {
    "h": 52.785,
    "s": 83.158,
    "l": 62.745
  },
  "oklch": {
    "l": 0.88539,
    "c": 0.15591,
    "h": 101.5
  },
  "luminance": 0.70131
}

Semantic roles & 50–950 ramp

primary

#EFDC51

secondary

#3040B5

accent

#20E006

background

#FFFEFC

surface

#FFFCF4

border

#D7D5CE

text

#18150C

muted

#86847F

Preview Lab

Preview with #EFDC51

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

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