#EFE43B#EFE43B

#EFE43B is a very light, vivid yellow. Relative luminance 0.742; OKLCH L 90.0% C 0.176 H 105.6°. Best body text is #000000 at 15.83:1 contrast (WCAG AA passes).

Color values

HEX	#EFE43B
RGB	rgb(239, 228, 59)
HSL	hsl(56, 85%, 58%)
HSV	hsv(56, 75%, 94%)
CMYK	cmyk(0%, 4.6%, 75.3%, 6.3%)
CIE-LAB	lab(89.00, -14.02, 77.57)
CIE-LCH	lch(89.00, 78.83, 100.25°)
OKLab	oklab(90.03% -0.0472 0.1695)
OKLCH	oklch(90.03% 0.176 105.6)
XYZ	xyz(64.1322, 74.1558, 15.0722)
Luminance	0.7415 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFE43B #3B46EF

analogous

#EF8A3B #EFE43B #A0EF3B

triadic

#EFE43B #3BEFE4 #E43BEF

tetradic

#EFE43B #3BEF8A #3B46EF #EF3BA0

square

#EFE43B #3BEF8A #3B46EF #EF3BA0

split-complementary

#EFE43B #3BA0EF #8A3BEF

monochromatic

#A2990D #DBCF12 #EFE43B #F4EC74 #F8F4AC

Accessibility & contrast

On white

1.33

#EFE43B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

15.83

#EFE43B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFE43B

15.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFE43B	#FFFFFF	#000000	##000000
##EFE43B	1.00	1.33	15.83	15.83
#FFFFFF	1.33	1.00	21.00	21.00
#000000	15.83	21.00	1.00	1.00
##000000	15.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#F8DC10

Deuteranopia (green-blind)

#FCE348

Tritanopia (blue-blind)

#FFD4C4

Achromatopsia (no color)

#DFDFDF

Design tokens & code

CSS

--color: #efe43b;
/* rgb */ color: rgb(239, 228, 59);
/* oklch */ color: oklch(90.0% 0.176 105.6);

Tailwind

colors: {
  custom: {
    50: '#f9ec7e',
    500: '#efe43b',
    950: '#000000',
  },
}

SCSS

$custom: #efe43b;
$custom-light: #f9ec7e;
$custom-dark: #000000;

JSON

{
  "hex": "#efe43b",
  "rgb": {
    "r": 239,
    "g": 228,
    "b": 59
  },
  "hsl": {
    "h": 56.333,
    "s": 84.906,
    "l": 58.431
  },
  "oklch": {
    "l": 0.90034,
    "c": 0.17595,
    "h": 105.6
  },
  "luminance": 0.74153
}

Semantic roles & 50–950 ramp

primary

#EFE43B

secondary

#2A31A4

accent

#39FB2D

background

#FFFEFB

surface

#FFFDF2

border

#D7D5CC

text

#18160B

muted

#86847E

Preview Lab

Preview with #EFE43B

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

Preview Lab → · Contrast checker → · Palette generator →