#F3EF59#F3EF59

#F3EF59 is a very light, vivid yellow. Relative luminance 0.815; OKLCH L 92.8% C 0.167 H 107.8°. Best body text is #000000 at 17.30:1 contrast (WCAG AA passes).

Color values

HEX	#F3EF59
RGB	rgb(243, 239, 89)
HSL	hsl(58, 87%, 65%)
HSV	hsv(58, 63%, 95%)
CMYK	cmyk(0%, 1.6%, 63.4%, 4.7%)
CIE-LAB	lab(92.36, -16.32, 70.34)
CIE-LCH	lch(92.36, 72.20, 103.06°)
OKLab	oklab(92.85% -0.051 0.1591)
OKLCH	oklch(92.85% 0.167 107.8)
XYZ	xyz(69.6342, 81.5111, 21.5144)
Luminance	0.8151 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#F3EF59 #595DF3

analogous

#F3A259 #F3EF59 #AAF359

triadic

#F3EF59 #59F3EF #EF59F3

tetradic

#F3EF59 #59F3A2 #595DF3 #F359AA

square

#F3EF59 #59F3A2 #595DF3 #F359AA

split-complementary

#F3EF59 #59AAF3 #A259F3

monochromatic

#C3BF0E #EFEA20 #F3EF59 #F7F592 #FBFACB

Accessibility & contrast

On white

1.21

#F3EF59 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.30

#F3EF59 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #F3EF59

17.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##F3EF59	#FFFFFF	#000000	##000000
##F3EF59	1.00	1.21	17.30	17.30
#FFFFFF	1.21	1.00	21.00	21.00
#000000	17.30	21.00	1.00	1.00
##000000	17.30	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE645

Deuteranopia (green-blind)

#FFEC62

Tritanopia (blue-blind)

#FFE0D0

Achromatopsia (no color)

#E9E9E9

Design tokens & code

CSS

--color: #f3ef59;
/* rgb */ color: rgb(243, 239, 89);
/* oklch */ color: oklch(92.8% 0.167 107.8);

Tailwind

colors: {
  custom: {
    50: '#faf48f',
    500: '#f3ef59',
    950: '#000000',
  },
}

SCSS

$custom: #f3ef59;
$custom-light: #faf48f;
$custom-dark: #000000;

JSON

{
  "hex": "#f3ef59",
  "rgb": {
    "r": 243,
    "g": 239,
    "b": 89
  },
  "hsl": {
    "h": 58.442,
    "s": 86.517,
    "l": 65.098
  },
  "oklch": {
    "l": 0.9285,
    "c": 0.16705,
    "h": 107.8
  },
  "luminance": 0.81509
}

Semantic roles & 50–950 ramp

primary

#F3EF59

secondary

#2F33C1

accent

#08E302

background

#FFFFFC

surface

#FFFEF4

border

#D7D6CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #F3EF59

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

Preview Lab → · Contrast checker → · Palette generator →