#EFF36B#EFF36B

#EFF36B is a very light, vivid yellow. Relative luminance 0.835; OKLCH L 93.5% C 0.158 H 110.6°. Best body text is #000000 at 17.70:1 contrast (WCAG AA passes).

Color values

HEX	#EFF36B
RGB	rgb(239, 243, 107)
HSL	hsl(62, 85%, 69%)
HSV	hsv(62, 56%, 95%)
CMYK	cmyk(1.6%, 0%, 56%, 4.7%)
CIE-LAB	lab(93.24, -18.68, 63.75)
CIE-LCH	lch(93.24, 66.43, 106.33°)
OKLab	oklab(93.53% -0.0556 0.1475)
OKLCH	oklch(93.53% 0.158 110.6)
XYZ	xyz(70.3028, 83.5151, 26.3237)
Luminance	0.8351 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF36B #6F6BF3

analogous

#F3B36B #EFF36B #ABF36B

triadic

#EFF36B #6BEFF3 #F36BEF

tetradic

#EFF36B #6BF3B3 #6F6BF3 #F36BAB

square

#EFF36B #6BF3B3 #6F6BF3 #F36BAB

split-complementary

#EFF36B #6BABF3 #B36BF3

monochromatic

#CDD311 #E9EE32 #EFF36B #F5F8A4 #FBFCDC

Accessibility & contrast

On white

1.19

#EFF36B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.70

#EFF36B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF36B

17.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF36B	#FFFFFF	#000000	##000000
##EFF36B	1.00	1.19	17.70	17.70
#FFFFFF	1.19	1.00	21.00	21.00
#000000	17.70	21.00	1.00	1.00
##000000	17.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE95C

Deuteranopia (green-blind)

#FFEE73

Tritanopia (blue-blind)

#FEE6D5

Achromatopsia (no color)

#ECECEC

Design tokens & code

CSS

--color: #eff36b;
/* rgb */ color: rgb(239, 243, 107);
/* oklch */ color: oklch(93.5% 0.158 110.6);

Tailwind

colors: {
  custom: {
    50: '#f7f69a',
    500: '#eff36b',
    950: '#000000',
  },
}

SCSS

$custom: #eff36b;
$custom-light: #f7f69a;
$custom-dark: #000000;

JSON

{
  "hex": "#eff36b",
  "rgb": {
    "r": 239,
    "g": 243,
    "b": 107
  },
  "hsl": {
    "h": 61.765,
    "s": 85,
    "l": 68.627
  },
  "oklch": {
    "l": 0.93526,
    "c": 0.15767,
    "h": 110.6
  },
  "luminance": 0.83513
}

Semantic roles & 50–950 ramp

primary

#EFF36B

secondary

#3B36CC

accent

#04E10B

background

#FFFFFC

surface

#FFFEF5

border

#D7D6CF

text

#18170E

muted

#86857F

Preview Lab

Preview with #EFF36B

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

Preview Lab → · Contrast checker → · Palette generator →