#EFFB5E#EFFB5E

#EFFB5E is a very light, vivid yellow. Relative luminance 0.882; OKLCH L 95.1% C 0.176 H 113.4°. Best body text is #000000 at 18.63:1 contrast (WCAG AA passes).

Color values

HEX	#EFFB5E
RGB	rgb(239, 251, 94)
HSL	hsl(65, 95%, 68%)
HSV	hsv(65, 63%, 98%)
CMYK	cmyk(4.8%, 0%, 62.5%, 1.6%)
CIE-LAB	lab(95.23, -23.38, 71.29)
CIE-LCH	lch(95.23, 75.02, 108.16°)
OKLab	oklab(95.08% -0.0702 0.1619)
OKLCH	oklch(95.08% 0.176 113.4)
XYZ	xyz(72.1160, 88.1546, 23.8041)
Luminance	0.8815 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFFB5E #6A5EFB

analogous

#FBB85E #EFFB5E #A0FB5E

triadic

#EFFB5E #5EEFFB #FB5EEF

tetradic

#EFFB5E #5EFBB8 #6A5EFB #FB5EA0

square

#EFFB5E #5EFBB8 #6A5EFB #FB5EA0

split-complementary

#EFFB5E #5EA0FB #B85EFB

monochromatic

#C9D905 #E9FA22 #EFFB5E #F5FC9A #FBFED5

Accessibility & contrast

On white

1.13

#EFFB5E on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.63

#EFFB5E on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFFB5E

18.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFFB5E	#FFFFFF	#000000	##000000
##EFFB5E	1.00	1.13	18.63	18.63
#FFFFFF	1.13	1.00	21.00	21.00
#000000	18.63	21.00	1.00	1.00
##000000	18.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF04A

Deuteranopia (green-blind)

#FFF368

Tritanopia (blue-blind)

#FEEDDB

Achromatopsia (no color)

#F1F1F1

Design tokens & code

CSS

--color: #effb5e;
/* rgb */ color: rgb(239, 251, 94);
/* oklch */ color: oklch(95.1% 0.176 113.4);

Tailwind

colors: {
  custom: {
    50: '#f7fc92',
    500: '#effb5e',
    950: '#000000',
  },
}

SCSS

$custom: #effb5e;
$custom-light: #f7fc92;
$custom-dark: #000000;

JSON

{
  "hex": "#effb5e",
  "rgb": {
    "r": 239,
    "g": 251,
    "b": 94
  },
  "hsl": {
    "h": 64.586,
    "s": 95.152,
    "l": 67.647
  },
  "oklch": {
    "l": 0.95079,
    "c": 0.17644,
    "h": 113.4
  },
  "luminance": 0.88153
}

Semantic roles & 50–950 ramp

primary

#EFFB5E

secondary

#372AD3

accent

#00E612

background

#FFFFFC

surface

#FFFFF5

border

#D7D7CF

text

#18170D

muted

#86857F

Preview Lab

Preview with #EFFB5E

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

Preview Lab → · Contrast checker → · Palette generator →