#F9EF57#F9EF57

#F9EF57 is a very light, vivid yellow. Relative luminance 0.826; OKLCH L 93.3% C 0.168 H 105.6°. Best body text is #000000 at 17.51:1 contrast (WCAG AA passes).

Color values

HEX	#F9EF57
RGB	rgb(249, 239, 87)
HSL	hsl(56, 93%, 66%)
HSV	hsv(56, 65%, 98%)
CMYK	cmyk(0%, 4%, 65.1%, 2.4%)
CIE-LAB	lab(92.82, -14.00, 71.75)
CIE-LCH	lch(92.82, 73.10, 101.04°)
OKLab	oklab(93.33% -0.045 0.1616)
OKLCH	oklch(93.33% 0.168 105.6)
XYZ	xyz(71.6564, 82.5634, 21.1768)
Luminance	0.8256 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#F9EF57 #5761F9

analogous

#F99E57 #F9EF57 #B2F957

triadic

#F9EF57 #57F9EF #EF57F9

tetradic

#F9EF57 #57F99E #5761F9 #F957B2

square

#F9EF57 #57F99E #5761F9 #F957B2

split-complementary

#F9EF57 #57B2F9 #9E57F9

monochromatic

#CEC207 #F7E91C #F9EF57 #FBF592 #FDFACD

Accessibility & contrast

On white

1.20

#F9EF57 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.51

#F9EF57 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #F9EF57

17.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##F9EF57	#FFFFFF	#000000	##000000
##F9EF57	1.00	1.20	17.51	17.51
#FFFFFF	1.20	1.00	21.00	21.00
#000000	17.51	21.00	1.00	1.00
##000000	17.51	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE742

Deuteranopia (green-blind)

#FFED60

Tritanopia (blue-blind)

#FFE0D0

Achromatopsia (no color)

#EAEAEA

Design tokens & code

CSS

--color: #f9ef57;
/* rgb */ color: rgb(249, 239, 87);
/* oklch */ color: oklch(93.3% 0.168 105.6);

Tailwind

colors: {
  custom: {
    50: '#fff38e',
    500: '#f9ef57',
    950: '#000000',
  },
}

SCSS

$custom: #f9ef57;
$custom-light: #fff38e;
$custom-dark: #000000;

JSON

{
  "hex": "#f9ef57",
  "rgb": {
    "r": 249,
    "g": 239,
    "b": 87
  },
  "hsl": {
    "h": 56.296,
    "s": 93.103,
    "l": 65.882
  },
  "oklch": {
    "l": 0.93332,
    "c": 0.16774,
    "h": 105.6
  },
  "luminance": 0.82561
}

Semantic roles & 50–950 ramp

primary

#F9EF57

secondary

#2B34CA

accent

#0EE600

background

#FFFFFC

surface

#FFFEF4

border

#D7D6CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #F9EF57

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

Preview Lab → · Contrast checker → · Palette generator →