#EFF05D#EFF05D

#EFF05D is a very light, vivid yellow. Relative luminance 0.815; OKLCH L 92.8% C 0.166 H 109.6°. Best body text is #000000 at 17.29:1 contrast (WCAG AA passes).

Color values

HEX	#EFF05D
RGB	rgb(239, 240, 93)
HSL	hsl(60, 83%, 65%)
HSV	hsv(60, 61%, 94%)
CMYK	cmyk(0.4%, 0%, 61.2%, 5.9%)
CIE-LAB	lab(92.34, -18.18, 68.62)
CIE-LCH	lch(92.34, 70.99, 104.83°)
OKLab	oklab(92.77% -0.0556 0.1561)
OKLCH	oklch(92.77% 0.166 109.6)
XYZ	xyz(68.7346, 81.4631, 22.4570)
Luminance	0.8146 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF05D #5E5DF0

analogous

#F0A75D #EFF05D #A6F05D

triadic

#EFF05D #5DEFF0 #F05DEF

tetradic

#EFF05D #5DF0A7 #5E5DF0 #F05DA6

square

#EFF05D #5DF0A7 #5E5DF0 #F05DA6

split-complementary

#EFF05D #5DA6F0 #A75DF0

monochromatic

#C0C112 #E9EB25 #EFF05D #F5F595 #FAFACD

Accessibility & contrast

On white

1.21

#EFF05D on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.29

#EFF05D on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF05D

17.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF05D	#FFFFFF	#000000	##000000
##EFF05D	1.00	1.21	17.29	17.29
#FFFFFF	1.21	1.00	21.00	21.00
#000000	17.29	21.00	1.00	1.00
##000000	17.29	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE64B

Deuteranopia (green-blind)

#FFEB66

Tritanopia (blue-blind)

#FFE2D1

Achromatopsia (no color)

#E9E9E9

Design tokens & code

CSS

--color: #eff05d;
/* rgb */ color: rgb(239, 240, 93);
/* oklch */ color: oklch(92.8% 0.166 109.6);

Tailwind

colors: {
  custom: {
    50: '#f7f491',
    500: '#eff05d',
    950: '#000000',
  },
}

SCSS

$custom: #eff05d;
$custom-light: #f7f491;
$custom-dark: #000000;

JSON

{
  "hex": "#eff05d",
  "rgb": {
    "r": 239,
    "g": 240,
    "b": 93
  },
  "hsl": {
    "h": 60.408,
    "s": 83.051,
    "l": 65.294
  },
  "oklch": {
    "l": 0.92767,
    "c": 0.16573,
    "h": 109.6
  },
  "luminance": 0.81461
}

Semantic roles & 50–950 ramp

primary

#EFF05D

secondary

#3332BF

accent

#06DF08

background

#FFFFFC

surface

#FFFEF4

border

#D7D6CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #EFF05D

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

Preview Lab → · Contrast checker → · Palette generator →