#EFFB61#EFFB61

#EFFB61 is a very light, vivid yellow. Relative luminance 0.882; OKLCH L 95.1% C 0.174 H 113.5°. Best body text is #000000 at 18.64:1 contrast (WCAG AA passes).

Color values

HEX	#EFFB61
RGB	rgb(239, 251, 97)
HSL	hsl(65, 95%, 68%)
HSV	hsv(65, 61%, 98%)
CMYK	cmyk(4.8%, 0%, 61.4%, 1.6%)
CIE-LAB	lab(95.25, -23.19, 70.12)
CIE-LCH	lch(95.25, 73.85, 108.30°)
OKLab	oklab(95.1% -0.0693 0.1598)
OKLCH	oklch(95.1% 0.174 113.5)
XYZ	xyz(72.2533, 88.2095, 24.5269)
Luminance	0.8821 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFFB61 #6D61FB

analogous

#FBBA61 #EFFB61 #A2FB61

triadic

#EFFB61 #61EFFB #FB61EF

tetradic

#EFFB61 #61FBBA #6D61FB #FB61A2

square

#EFFB61 #61FBBA #6D61FB #FB61A2

split-complementary

#EFFB61 #61A2FB #BA61FB

monochromatic

#CBDC06 #E9F925 #EFFB61 #F5FD9D #FBFED8

Accessibility & contrast

On white

1.13

#EFFB61 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.64

#EFFB61 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFFB61

18.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFFB61	#FFFFFF	#000000	##000000
##EFFB61	1.00	1.13	18.64	18.64
#FFFFFF	1.13	1.00	21.00	21.00
#000000	18.64	21.00	1.00	1.00
##000000	18.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF04E

Deuteranopia (green-blind)

#FFF36B

Tritanopia (blue-blind)

#FEEDDB

Achromatopsia (no color)

#F1F1F1

Design tokens & code

CSS

--color: #effb61;
/* rgb */ color: rgb(239, 251, 97);
/* oklch */ color: oklch(95.1% 0.174 113.5);

Tailwind

colors: {
  custom: {
    50: '#f7fc94',
    500: '#effb61',
    950: '#000000',
  },
}

SCSS

$custom: #effb61;
$custom-light: #f7fc94;
$custom-dark: #000000;

JSON

{
  "hex": "#effb61",
  "rgb": {
    "r": 239,
    "g": 251,
    "b": 97
  },
  "hsl": {
    "h": 64.675,
    "s": 95.062,
    "l": 68.235
  },
  "oklch": {
    "l": 0.95105,
    "c": 0.17422,
    "h": 113.5
  },
  "luminance": 0.88208
}

Semantic roles & 50–950 ramp

primary

#EFFB61

secondary

#392CD5

accent

#00E612

background

#FFFFFC

surface

#FFFFF5

border

#D7D7CF

text

#18170E

muted

#86857F

Preview Lab

Preview with #EFFB61

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

Preview Lab → · Contrast checker → · Palette generator →