#EFEB63#EFEB63

#EFEB63 is a very light, vivid yellow. Relative luminance 0.787; OKLCH L 91.8% C 0.156 H 107.5°. Best body text is #000000 at 16.73:1 contrast (WCAG AA passes).

Color values

HEX	#EFEB63
RGB	rgb(239, 235, 99)
HSL	hsl(58, 81%, 66%)
HSV	hsv(58, 59%, 94%)
CMYK	cmyk(0%, 1.7%, 58.6%, 6.3%)
CIE-LAB	lab(91.08, -15.35, 64.78)
CIE-LCH	lch(91.08, 66.58, 103.33°)
OKLab	oklab(91.78% -0.047 0.1488)
OKLCH	oklch(91.78% 0.156 107.5)
XYZ	xyz(67.5592, 78.6702, 23.4280)
Luminance	0.7867 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFEB63 #6367EF

analogous

#EFA563 #EFEB63 #ADEF63

triadic

#EFEB63 #63EFEB #EB63EF

tetradic

#EFEB63 #63EFA5 #6367EF #EF63AD

square

#EFEB63 #63EFA5 #6367EF #EF63AD

split-complementary

#EFEB63 #63ADEF #A563EF

monochromatic

#C4BF14 #E9E42B #EFEB63 #F5F29B #FAF9D2

Accessibility & contrast

On white

1.25

#EFEB63 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

16.73

#EFEB63 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFEB63

16.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFEB63	#FFFFFF	#000000	##000000
##EFEB63	1.00	1.25	16.73	16.73
#FFFFFF	1.25	1.00	21.00	21.00
#000000	16.73	21.00	1.00	1.00
##000000	16.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FDE354

Deuteranopia (green-blind)

#FFE86B

Tritanopia (blue-blind)

#FFDDCE

Achromatopsia (no color)

#E5E5E5

Design tokens & code

CSS

--color: #efeb63;
/* rgb */ color: rgb(239, 235, 99);
/* oklch */ color: oklch(91.8% 0.156 107.5);

Tailwind

colors: {
  custom: {
    50: '#f7f194',
    500: '#efeb63',
    950: '#000000',
  },
}

SCSS

$custom: #efeb63;
$custom-light: #f7f194;
$custom-dark: #000000;

JSON

{
  "hex": "#efeb63",
  "rgb": {
    "r": 239,
    "g": 235,
    "b": 99
  },
  "hsl": {
    "h": 58.286,
    "s": 81.395,
    "l": 66.275
  },
  "oklch": {
    "l": 0.91784,
    "c": 0.15602,
    "h": 107.5
  },
  "luminance": 0.78668
}

Semantic roles & 50–950 ramp

primary

#EFEB63

secondary

#3539C1

accent

#0EDE08

background

#FFFFFC

surface

#FFFEF5

border

#D7D6CF

text

#18160E

muted

#86857F

Preview Lab

Preview with #EFEB63

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

Preview Lab → · Contrast checker → · Palette generator →