#EFEB54#EFEB54

#EFEB54 is a very light, vivid yellow. Relative luminance 0.784; OKLCH L 91.7% C 0.167 H 107.8°. Best body text is #000000 at 16.68:1 contrast (WCAG AA passes).

Color values

HEX	#EFEB54
RGB	rgb(239, 235, 84)
HSL	hsl(58, 83%, 63%)
HSV	hsv(58, 65%, 94%)
CMYK	cmyk(0%, 1.7%, 64.9%, 6.3%)
CIE-LAB	lab(90.97, -16.28, 70.74)
CIE-LCH	lch(90.97, 72.59, 102.96°)
OKLab	oklab(91.65% -0.0512 0.1593)
OKLCH	oklch(91.65% 0.167 107.8)
XYZ	xyz(66.9075, 78.4096, 19.9959)
Luminance	0.7841 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFEB54 #5458EF

analogous

#EF9E54 #EFEB54 #A5EF54

triadic

#EFEB54 #54EFEB #EB54EF

tetradic

#EFEB54 #54EF9E #5458EF #EF54A5

square

#EFEB54 #54EF9E #5458EF #EF54A5

split-complementary

#EFEB54 #54A5EF #9E54EF

monochromatic

#B7B311 #EAE41C #EFEB54 #F4F28C #F9F8C4

Accessibility & contrast

On white

1.26

#EFEB54 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

16.68

#EFEB54 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFEB54

16.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFEB54	#FFFFFF	#000000	##000000
##EFEB54	1.00	1.26	16.68	16.68
#FFFFFF	1.26	1.00	21.00	21.00
#000000	16.68	21.00	1.00	1.00
##000000	16.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FEE23F

Deuteranopia (green-blind)

#FFE85E

Tritanopia (blue-blind)

#FFDCCC

Achromatopsia (no color)

#E5E5E5

Design tokens & code

CSS

--color: #efeb54;
/* rgb */ color: rgb(239, 235, 84);
/* oklch */ color: oklch(91.7% 0.167 107.8);

Tailwind

colors: {
  custom: {
    50: '#f8f18c',
    500: '#efeb54',
    950: '#000000',
  },
}

SCSS

$custom: #efeb54;
$custom-light: #f8f18c;
$custom-dark: #000000;

JSON

{
  "hex": "#efeb54",
  "rgb": {
    "r": 239,
    "g": 235,
    "b": 84
  },
  "hsl": {
    "h": 58.452,
    "s": 82.888,
    "l": 63.333
  },
  "oklch": {
    "l": 0.91652,
    "c": 0.16731,
    "h": 107.8
  },
  "luminance": 0.78407
}

Semantic roles & 50–950 ramp

primary

#EFEB54

secondary

#3134B7

accent

#0CDF06

background

#FFFFFC

surface

#FFFEF4

border

#D7D6CE

text

#18160D

muted

#86857F

Preview Lab

Preview with #EFEB54

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

Preview Lab → · Contrast checker → · Palette generator →