#EFF379#EFF379

#EFF379 is a very light, vivid yellow. Relative luminance 0.838; OKLCH L 93.7% C 0.145 H 110.6°. Best body text is #000000 at 17.77:1 contrast (WCAG AA passes).

Color values

HEX	#EFF379
RGB	rgb(239, 243, 121)
HSL	hsl(62, 84%, 71%)
HSV	hsv(62, 50%, 95%)
CMYK	cmyk(1.6%, 0%, 50.2%, 4.7%)
CIE-LAB	lab(93.38, -17.57, 57.69)
CIE-LCH	lch(93.38, 60.31, 106.94°)
OKLab	oklab(93.68% -0.0511 0.1359)
OKLCH	oklch(93.68% 0.145 110.6)
XYZ	xyz(71.0999, 83.8339, 30.5216)
Luminance	0.8383 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF379 #7D79F3

analogous

#F3BA79 #EFF379 #B2F379

triadic

#EFF379 #79EFF3 #F379EF

tetradic

#EFF379 #79F3BA #7D79F3 #F379B2

square

#EFF379 #79F3BA #7D79F3 #F379B2

split-complementary

#EFF379 #79B2F3 #BA79F3

monochromatic

#D7DE14 #E8EE41 #EFF379 #F6F8B1 #FCFCE3

Accessibility & contrast

On white

1.18

#EFF379 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.77

#EFF379 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF379

17.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF379	#FFFFFF	#000000	##000000
##EFF379	1.00	1.18	17.77	17.77
#FFFFFF	1.18	1.00	21.00	21.00
#000000	17.77	21.00	1.00	1.00
##000000	17.77	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEA6E

Deuteranopia (green-blind)

#FFEE7F

Tritanopia (blue-blind)

#FDE6D7

Achromatopsia (no color)

#ECECEC

Design tokens & code

CSS

--color: #eff379;
/* rgb */ color: rgb(239, 243, 121);
/* oklch */ color: oklch(93.7% 0.145 110.6);

Tailwind

colors: {
  custom: {
    50: '#f6f6a3',
    500: '#eff379',
    950: '#000000',
  },
}

SCSS

$custom: #eff379;
$custom-light: #f6f6a3;
$custom-dark: #000000;

JSON

{
  "hex": "#eff379",
  "rgb": {
    "r": 239,
    "g": 243,
    "b": 121
  },
  "hsl": {
    "h": 61.967,
    "s": 83.562,
    "l": 71.373
  },
  "oklch": {
    "l": 0.93681,
    "c": 0.14519,
    "h": 110.6
  },
  "luminance": 0.83832
}

Semantic roles & 50–950 ramp

primary

#EFF379

secondary

#4743CE

accent

#06E00D

background

#FFFFFC

surface

#FFFEF6

border

#D7D6D0

text

#17170F

muted

#858580

Preview Lab

Preview with #EFF379

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

Preview Lab → · Contrast checker → · Palette generator →