#EFF05F#EFF05F

#EFF05F is a very light, vivid yellow. Relative luminance 0.815; OKLCH L 92.8% C 0.164 H 109.6°. Best body text is #000000 at 17.30:1 contrast (WCAG AA passes).

Color values

HEX	#EFF05F
RGB	rgb(239, 240, 95)
HSL	hsl(60, 83%, 66%)
HSV	hsv(60, 60%, 94%)
CMYK	cmyk(0.4%, 0%, 60.4%, 5.9%)
CIE-LAB	lab(92.35, -18.05, 67.83)
CIE-LCH	lch(92.35, 70.19, 104.90°)
OKLab	oklab(92.79% -0.055 0.1547)
OKLCH	oklch(92.79% 0.164 109.6)
XYZ	xyz(68.8243, 81.4990, 22.9297)
Luminance	0.8150 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF05F #605FF0

analogous

#F0A85F #EFF05F #A6F05F

triadic

#EFF05F #5FEFF0 #F05FEF

tetradic

#EFF05F #5FF0A8 #605FF0 #F05FA6

square

#EFF05F #5FF0A8 #605FF0 #F05FA6

split-complementary

#EFF05F #5FA6F0 #A85FF0

monochromatic

#C1C212 #E9EB27 #EFF05F #F5F597 #FAFACF

Accessibility & contrast

On white

1.21

#EFF05F on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.30

#EFF05F on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF05F

17.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF05F	#FFFFFF	#000000	##000000
##EFF05F	1.00	1.21	17.30	17.30
#FFFFFF	1.21	1.00	21.00	21.00
#000000	17.30	21.00	1.00	1.00
##000000	17.30	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE74D

Deuteranopia (green-blind)

#FFEB68

Tritanopia (blue-blind)

#FFE2D2

Achromatopsia (no color)

#E9E9E9

Design tokens & code

CSS

--color: #eff05f;
/* rgb */ color: rgb(239, 240, 95);
/* oklch */ color: oklch(92.8% 0.164 109.6);

Tailwind

colors: {
  custom: {
    50: '#f7f492',
    500: '#eff05f',
    950: '#000000',
  },
}

SCSS

$custom: #eff05f;
$custom-light: #f7f492;
$custom-dark: #000000;

JSON

{
  "hex": "#eff05f",
  "rgb": {
    "r": 239,
    "g": 240,
    "b": 95
  },
  "hsl": {
    "h": 60.414,
    "s": 82.857,
    "l": 65.686
  },
  "oklch": {
    "l": 0.92785,
    "c": 0.16421,
    "h": 109.6
  },
  "luminance": 0.81497
}

Semantic roles & 50–950 ramp

primary

#EFF05F

secondary

#3433C0

accent

#06DF08

background

#FFFFFC

surface

#FFFEF4

border

#D7D6CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #EFF05F

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

Preview Lab → · Contrast checker → · Palette generator →