#EFF153#EFF153

#EFF153 is a very light, vivid yellow. Relative luminance 0.819; OKLCH L 92.9% C 0.174 H 110.1°. Best body text is #000000 at 17.38:1 contrast (WCAG AA passes).

Color values

HEX	#EFF153
RGB	rgb(239, 241, 83)
HSL	hsl(61, 85%, 64%)
HSV	hsv(61, 66%, 95%)
CMYK	cmyk(0.8%, 0%, 65.6%, 5.5%)
CIE-LAB	lab(92.53, -19.24, 72.72)
CIE-LCH	lch(92.53, 75.22, 104.82°)
OKLab	oklab(92.89% -0.0596 0.1633)
OKLCH	oklch(92.89% 0.174 110.1)
XYZ	xyz(68.6155, 81.8877, 20.3734)
Luminance	0.8189 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF153 #5553F1

analogous

#F1A453 #EFF153 #A0F153

triadic

#EFF153 #53EFF1 #F153EF

tetradic

#EFF153 #53F1A4 #5553F1 #F153A0

square

#EFF153 #53F1A4 #5553F1 #F153A0

split-complementary

#EFF153 #53A0F1 #A453F1

monochromatic

#B8BA0F #EAEC1A #EFF153 #F4F68C #FAFAC4

Accessibility & contrast

On white

1.21

#EFF153 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.38

#EFF153 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF153

17.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF153	#FFFFFF	#000000	##000000
##EFF153	1.00	1.21	17.38	17.38
#FFFFFF	1.21	1.00	21.00	21.00
#000000	17.38	21.00	1.00	1.00
##000000	17.38	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE73C

Deuteranopia (green-blind)

#FFEC5E

Tritanopia (blue-blind)

#FFE2D1

Achromatopsia (no color)

#EAEAEA

Design tokens & code

CSS

--color: #eff153;
/* rgb */ color: rgb(239, 241, 83);
/* oklch */ color: oklch(92.9% 0.174 110.1);

Tailwind

colors: {
  custom: {
    50: '#f8f58b',
    500: '#eff153',
    950: '#000000',
  },
}

SCSS

$custom: #eff153;
$custom-light: #f8f58b;
$custom-dark: #000000;

JSON

{
  "hex": "#eff153",
  "rgb": {
    "r": 239,
    "g": 241,
    "b": 83
  },
  "hsl": {
    "h": 60.759,
    "s": 84.946,
    "l": 63.529
  },
  "oklch": {
    "l": 0.92894,
    "c": 0.17385,
    "h": 110.1
  },
  "luminance": 0.81886
}

Semantic roles & 50–950 ramp

primary

#EFF153

secondary

#312FB9

accent

#04E107

background

#FFFFFC

surface

#FFFEF4

border

#D7D6CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #EFF153

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

Preview Lab → · Contrast checker → · Palette generator →