#EFF35B#EFF35B

#EFF35B is a very light, vivid yellow. Relative luminance 0.832; OKLCH L 93.4% C 0.170 H 110.7°. Best body text is #000000 at 17.64:1 contrast (WCAG AA passes).

Color values

HEX	#EFF35B
RGB	rgb(239, 243, 91)
HSL	hsl(62, 86%, 65%)
HSV	hsv(62, 63%, 95%)
CMYK	cmyk(1.6%, 0%, 62.6%, 4.7%)
CIE-LAB	lab(93.11, -19.75, 70.23)
CIE-LCH	lch(93.11, 72.96, 105.70°)
OKLab	oklab(93.38% -0.0602 0.1593)
OKLCH	oklch(93.38% 0.17 110.7)
XYZ	xyz(69.5376, 83.2090, 22.2934)
Luminance	0.8321 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF35B #5F5BF3

analogous

#F3AB5B #EFF35B #A3F35B

triadic

#EFF35B #5BEFF3 #F35BEF

tetradic

#EFF35B #5BF3AB #5F5BF3 #F35BA3

square

#EFF35B #5BF3AB #5F5BF3 #F35BA3

split-complementary

#EFF35B #5BA3F3 #AB5BF3

monochromatic

#C0C50E #E9EF22 #EFF35B #F5F794 #FAFBCD

Accessibility & contrast

On white

1.19

#EFF35B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.64

#EFF35B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF35B

17.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF35B	#FFFFFF	#000000	##000000
##EFF35B	1.00	1.19	17.64	17.64
#FFFFFF	1.19	1.00	21.00	21.00
#000000	17.64	21.00	1.00	1.00
##000000	17.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE947

Deuteranopia (green-blind)

#FFED65

Tritanopia (blue-blind)

#FFE5D4

Achromatopsia (no color)

#EBEBEB

Design tokens & code

CSS

--color: #eff35b;
/* rgb */ color: rgb(239, 243, 91);
/* oklch */ color: oklch(93.4% 0.170 110.7);

Tailwind

colors: {
  custom: {
    50: '#f7f690',
    500: '#eff35b',
    950: '#000000',
  },
}

SCSS

$custom: #eff35b;
$custom-light: #f7f690;
$custom-dark: #000000;

JSON

{
  "hex": "#eff35b",
  "rgb": {
    "r": 239,
    "g": 243,
    "b": 91
  },
  "hsl": {
    "h": 61.579,
    "s": 86.364,
    "l": 65.49
  },
  "oklch": {
    "l": 0.93376,
    "c": 0.17027,
    "h": 110.7
  },
  "luminance": 0.83207
}

Semantic roles & 50–950 ramp

primary

#EFF35B

secondary

#3430C2

accent

#03E309

background

#FFFFFC

surface

#FFFEF4

border

#D7D6CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #EFF35B

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

Preview Lab → · Contrast checker → · Palette generator →