#EFEC54#EFEC54

#EFEC54 is a very light, vivid yellow. Relative luminance 0.790; OKLCH L 91.9% C 0.168 H 108.2°. Best body text is #000000 at 16.80:1 contrast (WCAG AA passes).

Color values

HEX	#EFEC54
RGB	rgb(239, 236, 84)
HSL	hsl(59, 83%, 63%)
HSV	hsv(59, 65%, 94%)
CMYK	cmyk(0%, 1.3%, 64.9%, 6.3%)
CIE-LAB	lab(91.23, -16.77, 71.01)
CIE-LCH	lch(91.23, 72.96, 103.28°)
OKLab	oklab(91.86% -0.0526 0.1599)
OKLCH	oklch(91.86% 0.168 108.2)
XYZ	xyz(67.1946, 78.9838, 20.0916)
Luminance	0.7898 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFEC54 #5457EF

analogous

#EF9E54 #EFEC54 #A4EF54

triadic

#EFEC54 #54EFEC #EC54EF

tetradic

#EFEC54 #54EF9E #5457EF #EF54A4

square

#EFEC54 #54EF9E #5457EF #EF54A4

split-complementary

#EFEC54 #54A4EF #9E54EF

monochromatic

#B7B411 #EAE61C #EFEC54 #F4F28C #F9F8C4

Accessibility & contrast

On white

1.25

#EFEC54 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

16.80

#EFEC54 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFEC54

16.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFEC54	#FFFFFF	#000000	##000000
##EFEC54	1.00	1.25	16.80	16.80
#FFFFFF	1.25	1.00	21.00	21.00
#000000	16.80	21.00	1.00	1.00
##000000	16.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE33F

Deuteranopia (green-blind)

#FFE85E

Tritanopia (blue-blind)

#FFDDCD

Achromatopsia (no color)

#E6E6E6

Design tokens & code

CSS

--color: #efec54;
/* rgb */ color: rgb(239, 236, 84);
/* oklch */ color: oklch(91.9% 0.168 108.2);

Tailwind

colors: {
  custom: {
    50: '#f8f18c',
    500: '#efec54',
    950: '#000000',
  },
}

SCSS

$custom: #efec54;
$custom-light: #f8f18c;
$custom-dark: #000000;

JSON

{
  "hex": "#efec54",
  "rgb": {
    "r": 239,
    "g": 236,
    "b": 84
  },
  "hsl": {
    "h": 58.839,
    "s": 82.888,
    "l": 63.333
  },
  "oklch": {
    "l": 0.9186,
    "c": 0.16827,
    "h": 108.2
  },
  "luminance": 0.78982
}

Semantic roles & 50–950 ramp

primary

#EFEC54

secondary

#3133B7

accent

#0ADF06

background

#FFFFFC

surface

#FFFEF4

border

#D7D6CE

text

#18160D

muted

#86857F

Preview Lab

Preview with #EFEC54

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

Preview Lab → · Contrast checker → · Palette generator →