#EFFA57#EFFA57

#EFFA57 is a very light, vivid yellow. Relative luminance 0.874; OKLCH L 94.8% C 0.180 H 113.1°. Best body text is #000000 at 18.48:1 contrast (WCAG AA passes).

Color values

HEX	#EFFA57
RGB	rgb(239, 250, 87)
HSL	hsl(64, 94%, 66%)
HSV	hsv(64, 65%, 98%)
CMYK	cmyk(4.4%, 0%, 65.2%, 2%)
CIE-LAB	lab(94.91, -23.33, 73.66)
CIE-LCH	lch(94.91, 77.26, 107.57°)
OKLab	oklab(94.81% -0.0707 0.1659)
OKLCH	oklch(94.81% 0.18 113.1)
XYZ	xyz(71.5045, 87.4115, 22.1204)
Luminance	0.8741 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFFA57 #6257FA

analogous

#FAB357 #EFFA57 #9DFA57

triadic

#EFFA57 #57EFFA #FA57EF

tetradic

#EFFA57 #57FAB3 #6257FA #FA579D

square

#EFFA57 #57FAB3 #6257FA #FA579D

split-complementary

#EFFA57 #579DFA #B357FA

monochromatic

#C3D006 #E9F81C #EFFA57 #F5FC92 #FAFECE

Accessibility & contrast

On white

1.14

#EFFA57 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.48

#EFFA57 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFFA57

18.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFFA57	#FFFFFF	#000000	##000000
##EFFA57	1.00	1.14	18.48	18.48
#FFFFFF	1.14	1.00	21.00	21.00
#000000	18.48	21.00	1.00	1.00
##000000	18.48	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEF40

Deuteranopia (green-blind)

#FFF262

Tritanopia (blue-blind)

#FEECD9

Achromatopsia (no color)

#F0F0F0

Design tokens & code

CSS

--color: #effa57;
/* rgb */ color: rgb(239, 250, 87);
/* oklch */ color: oklch(94.8% 0.180 113.1);

Tailwind

colors: {
  custom: {
    50: '#f8fb8e',
    500: '#effa57',
    950: '#000000',
  },
}

SCSS

$custom: #effa57;
$custom-light: #f8fb8e;
$custom-dark: #000000;

JSON

{
  "hex": "#effa57",
  "rgb": {
    "r": 239,
    "g": 250,
    "b": 87
  },
  "hsl": {
    "h": 64.049,
    "s": 94.22,
    "l": 66.078
  },
  "oklch": {
    "l": 0.94812,
    "c": 0.18031,
    "h": 113.1
  },
  "luminance": 0.8741
}

Semantic roles & 50–950 ramp

primary

#EFFA57

secondary

#352ACB

accent

#00E60F

background

#FFFFFC

surface

#FFFFF4

border

#D7D7CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #EFFA57

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

Preview Lab → · Contrast checker → · Palette generator →