#EFFA5F#EFFA5F

#EFFA5F is a very light, vivid yellow. Relative luminance 0.875; OKLCH L 94.9% C 0.175 H 113.1°. Best body text is #000000 at 18.51:1 contrast (WCAG AA passes).

Color values

HEX	#EFFA5F
RGB	rgb(239, 250, 95)
HSL	hsl(64, 94%, 68%)
HSV	hsv(64, 62%, 98%)
CMYK	cmyk(4.4%, 0%, 62%, 2%)
CIE-LAB	lab(94.97, -22.85, 70.62)
CIE-LCH	lch(94.97, 74.22, 107.93°)
OKLab	oklab(94.88% -0.0686 0.1606)
OKLCH	oklch(94.88% 0.175 113.1)
XYZ	xyz(71.8496, 87.5496, 23.9381)
Luminance	0.8755 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFFA5F #6A5FFA

analogous

#FAB75F #EFFA5F #A2FA5F

triadic

#EFFA5F #5FEFFA #FA5FEF

tetradic

#EFFA5F #5FFAB7 #6A5FFA #FA5FA2

square

#EFFA5F #5FFAB7 #6A5FFA #FA5FA2

split-complementary

#EFFA5F #5FA2FA #B75FFA

monochromatic

#C9D807 #E9F824 #EFFA5F #F5FC9A #FBFED6

Accessibility & contrast

On white

1.13

#EFFA5F on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.51

#EFFA5F on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFFA5F

18.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFFA5F	#FFFFFF	#000000	##000000
##EFFA5F	1.00	1.13	18.51	18.51
#FFFFFF	1.13	1.00	21.00	21.00
#000000	18.51	21.00	1.00	1.00
##000000	18.51	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEF4B

Deuteranopia (green-blind)

#FFF269

Tritanopia (blue-blind)

#FEECDA

Achromatopsia (no color)

#F0F0F0

Design tokens & code

CSS

--color: #effa5f;
/* rgb */ color: rgb(239, 250, 95);
/* oklch */ color: oklch(94.9% 0.175 113.1);

Tailwind

colors: {
  custom: {
    50: '#f7fb93',
    500: '#effa5f',
    950: '#000000',
  },
}

SCSS

$custom: #effa5f;
$custom-light: #f7fb93;
$custom-dark: #000000;

JSON

{
  "hex": "#effa5f",
  "rgb": {
    "r": 239,
    "g": 250,
    "b": 95
  },
  "hsl": {
    "h": 64.258,
    "s": 93.939,
    "l": 67.647
  },
  "oklch": {
    "l": 0.94877,
    "c": 0.17464,
    "h": 113.1
  },
  "luminance": 0.87548
}

Semantic roles & 50–950 ramp

primary

#EFFA5F

secondary

#372BD2

accent

#00E610

background

#FFFFFC

surface

#FFFFF5

border

#D7D7CF

text

#18170E

muted

#86857F

Preview Lab

Preview with #EFFA5F

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

Preview Lab → · Contrast checker → · Palette generator →