#EFCF42#EFCF42

#EFCF42 is a very light, vivid yellow. Relative luminance 0.634; OKLCH L 85.8% C 0.156 H 95.9°. Best body text is #000000 at 13.67:1 contrast (WCAG AA passes).

Color values

HEX	#EFCF42
RGB	rgb(239, 207, 66)
HSL	hsl(49, 84%, 60%)
HSV	hsv(49, 72%, 94%)
CMYK	cmyk(0%, 13.4%, 72.4%, 6.3%)
CIE-LAB	lab(83.64, -3.20, 70.17)
CIE-LCH	lch(83.64, 70.24, 92.61°)
OKLab	oklab(85.79% -0.016 0.1551)
OKLCH	oklch(85.79% 0.156 95.9)
XYZ	xyz(58.8958, 63.3729, 14.2832)
Luminance	0.6337 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFCF42 #4262EF

analogous

#EF7942 #EFCF42 #B8EF42

triadic

#EFCF42 #42EFCF #CF42EF

tetradic

#EFCF42 #42EF79 #4262EF #EF42B8

square

#EFCF42 #42EF79 #4262EF #EF42B8

split-complementary

#EFCF42 #42B8EF #7942EF

monochromatic

#A88C0E #E1BB13 #EFCF42 #F4DD7A #F9ECB3

Accessibility & contrast

On white

1.54

#EFCF42 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.67

#EFCF42 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFCF42

13.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFCF42	#FFFFFF	#000000	##000000
##EFCF42	1.00	1.54	13.67	13.67
#FFFFFF	1.54	1.00	21.00	21.00
#000000	13.67	21.00	1.00	1.00
##000000	13.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E4CB2B

Deuteranopia (green-blind)

#ECD54A

Tritanopia (blue-blind)

#FFBFB3

Achromatopsia (no color)

#D0D0D0

Design tokens & code

CSS

--color: #efcf42;
/* rgb */ color: rgb(239, 207, 66);
/* oklch */ color: oklch(85.8% 0.156 95.9);

Tailwind

colors: {
  custom: {
    50: '#f8dd7f',
    500: '#efcf42',
    950: '#000000',
  },
}

SCSS

$custom: #efcf42;
$custom-light: #f8dd7f;
$custom-dark: #000000;

JSON

{
  "hex": "#efcf42",
  "rgb": {
    "r": 239,
    "g": 207,
    "b": 66
  },
  "hsl": {
    "h": 48.902,
    "s": 84.39,
    "l": 59.804
  },
  "oklch": {
    "l": 0.85792,
    "c": 0.15587,
    "h": 95.9
  },
  "luminance": 0.6337
}

Semantic roles & 50–950 ramp

primary

#EFCF42

secondary

#2C43AA

accent

#53FB2D

background

#FFFEFB

surface

#FFFCF2

border

#D7D5CC

text

#18150B

muted

#86847E

Preview Lab

Preview with #EFCF42

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

Preview Lab → · Contrast checker → · Palette generator →