#EFF378#EFF378

#EFF378 is a very light, vivid yellow. Relative luminance 0.838; OKLCH L 93.7% C 0.146 H 110.6°. Best body text is #000000 at 17.76:1 contrast (WCAG AA passes).

Color values

HEX	#EFF378
RGB	rgb(239, 243, 120)
HSL	hsl(62, 84%, 71%)
HSV	hsv(62, 51%, 95%)
CMYK	cmyk(1.6%, 0%, 50.6%, 4.7%)
CIE-LAB	lab(93.37, -17.66, 58.13)
CIE-LCH	lch(93.37, 60.76, 106.89°)
OKLab	oklab(93.67% -0.0514 0.1368)
OKLCH	oklch(93.67% 0.146 110.6)
XYZ	xyz(71.0389, 83.8095, 30.2003)
Luminance	0.8381 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF378 #7C78F3

analogous

#F3B978 #EFF378 #B1F378

triadic

#EFF378 #78EFF3 #F378EF

tetradic

#EFF378 #78F3B9 #7C78F3 #F378B1

square

#EFF378 #78F3B9 #7C78F3 #F378B1

split-complementary

#EFF378 #78B1F3 #B978F3

monochromatic

#D6DD14 #E8EE40 #EFF378 #F6F8B0 #FCFDE3

Accessibility & contrast

On white

1.18

#EFF378 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.76

#EFF378 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF378

17.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF378	#FFFFFF	#000000	##000000
##EFF378	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)

#FFEA6C

Deuteranopia (green-blind)

#FFEE7E

Tritanopia (blue-blind)

#FDE6D7

Achromatopsia (no color)

#ECECEC

Design tokens & code

CSS

--color: #eff378;
/* rgb */ color: rgb(239, 243, 120);
/* oklch */ color: oklch(93.7% 0.146 110.6);

Tailwind

colors: {
  custom: {
    50: '#f6f6a2',
    500: '#eff378',
    950: '#000000',
  },
}

SCSS

$custom: #eff378;
$custom-light: #f6f6a2;
$custom-dark: #000000;

JSON

{
  "hex": "#eff378",
  "rgb": {
    "r": 239,
    "g": 243,
    "b": 120
  },
  "hsl": {
    "h": 61.951,
    "s": 83.673,
    "l": 71.176
  },
  "oklch": {
    "l": 0.93669,
    "c": 0.14612,
    "h": 110.6
  },
  "luminance": 0.83808
}

Semantic roles & 50–950 ramp

primary

#EFF378

secondary

#4642CE

accent

#05E00C

background

#FFFFFC

surface

#FFFEF6

border

#D7D6D0

text

#17170F

muted

#858580

Preview Lab

Preview with #EFF378

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

Preview Lab → · Contrast checker → · Palette generator →