#EFF37C#EFF37C

#EFF37C is a very light, vivid yellow. Relative luminance 0.839; OKLCH L 93.7% C 0.142 H 110.6°. Best body text is #000000 at 17.78:1 contrast (WCAG AA passes).

Color values

HEX	#EFF37C
RGB	rgb(239, 243, 124)
HSL	hsl(62, 83%, 72%)
HSV	hsv(62, 49%, 95%)
CMYK	cmyk(1.6%, 0%, 49%, 4.7%)
CIE-LAB	lab(93.41, -17.31, 56.36)
CIE-LCH	lch(93.41, 58.96, 107.08°)
OKLab	oklab(93.72% -0.05 0.1333)
OKLCH	oklch(93.72% 0.142 110.6)
XYZ	xyz(71.2868, 83.9086, 31.5056)
Luminance	0.8391 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF37C #807CF3

analogous

#F3BC7C #EFF37C #B4F37C

triadic

#EFF37C #7CEFF3 #F37CEF

tetradic

#EFF37C #7CF3BC #807CF3 #F37CB4

square

#EFF37C #7CF3BC #807CF3 #F37CB4

split-complementary

#EFF37C #7CB4F3 #BC7CF3

monochromatic

#D9E015 #E8EE44 #EFF37C #F6F8B4 #FCFCE3

Accessibility & contrast

On white

1.18

#EFF37C on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.78

#EFF37C on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF37C

17.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF37C	#FFFFFF	#000000	##000000
##EFF37C	1.00	1.18	17.78	17.78
#FFFFFF	1.18	1.00	21.00	21.00
#000000	17.78	21.00	1.00	1.00
##000000	17.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEA71

Deuteranopia (green-blind)

#FFEE82

Tritanopia (blue-blind)

#FDE7D8

Achromatopsia (no color)

#ECECEC

Design tokens & code

CSS

--color: #eff37c;
/* rgb */ color: rgb(239, 243, 124);
/* oklch */ color: oklch(93.7% 0.142 110.6);

Tailwind

colors: {
  custom: {
    50: '#f6f6a5',
    500: '#eff37c',
    950: '#000000',
  },
}

SCSS

$custom: #eff37c;
$custom-light: #f6f6a5;
$custom-dark: #000000;

JSON

{
  "hex": "#eff37c",
  "rgb": {
    "r": 239,
    "g": 243,
    "b": 124
  },
  "hsl": {
    "h": 62.017,
    "s": 83.217,
    "l": 71.961
  },
  "oklch": {
    "l": 0.93718,
    "c": 0.14236,
    "h": 110.6
  },
  "luminance": 0.83907
}

Semantic roles & 50–950 ramp

primary

#EFF37C

secondary

#4A45CE

accent

#06E00D

background

#FFFFFC

surface

#FFFEF6

border

#D7D6D0

text

#17170F

muted

#858580

Preview Lab

Preview with #EFF37C

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

Preview Lab → · Contrast checker → · Palette generator →