#EFF377#EFF377

#EFF377 is a very light, vivid yellow. Relative luminance 0.838; OKLCH L 93.7% C 0.147 H 110.6°. Best body text is #000000 at 17.76:1 contrast (WCAG AA passes).

Color values

HEX	#EFF377
RGB	rgb(239, 243, 119)
HSL	hsl(62, 84%, 71%)
HSV	hsv(62, 51%, 95%)
CMYK	cmyk(1.6%, 0%, 51%, 4.7%)
CIE-LAB	lab(93.36, -17.74, 58.58)
CIE-LCH	lch(93.36, 61.20, 106.85°)
OKLab	oklab(93.66% -0.0517 0.1377)
OKLCH	oklch(93.66% 0.147 110.6)
XYZ	xyz(70.9785, 83.7854, 29.8824)
Luminance	0.8378 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF377 #7B77F3

analogous

#F3B977 #EFF377 #B1F377

triadic

#EFF377 #77EFF3 #F377EF

tetradic

#EFF377 #77F3B9 #7B77F3 #F377B1

square

#EFF377 #77F3B9 #7B77F3 #F377B1

split-complementary

#EFF377 #77B1F3 #B977F3

monochromatic

#D6DC13 #E8EE3F #EFF377 #F6F8AF #FCFDE3

Accessibility & contrast

On white

1.18

#EFF377 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.76

#EFF377 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF377

17.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF377	#FFFFFF	#000000	##000000
##EFF377	1.00	1.18	17.76	17.76
#FFFFFF	1.18	1.00	21.00	21.00
#000000	17.76	21.00	1.00	1.00
##000000	17.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEA6B

Deuteranopia (green-blind)

#FFEE7E

Tritanopia (blue-blind)

#FDE6D7

Achromatopsia (no color)

#ECECEC

Design tokens & code

CSS

--color: #eff377;
/* rgb */ color: rgb(239, 243, 119);
/* oklch */ color: oklch(93.7% 0.147 110.6);

Tailwind

colors: {
  custom: {
    50: '#f6f6a1',
    500: '#eff377',
    950: '#000000',
  },
}

SCSS

$custom: #eff377;
$custom-light: #f6f6a1;
$custom-dark: #000000;

JSON

{
  "hex": "#eff377",
  "rgb": {
    "r": 239,
    "g": 243,
    "b": 119
  },
  "hsl": {
    "h": 61.935,
    "s": 83.784,
    "l": 70.98
  },
  "oklch": {
    "l": 0.93658,
    "c": 0.14706,
    "h": 110.6
  },
  "luminance": 0.83784
}

Semantic roles & 50–950 ramp

primary

#EFF377

secondary

#4541CD

accent

#05E00C

background

#FFFFFC

surface

#FFFEF5

border

#D7D6CF

text

#17170F

muted

#858580

Preview Lab

Preview with #EFF377

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

Preview Lab → · Contrast checker → · Palette generator →