#EFF958#EFF958

#EFF958 is a very light, vivid yellow. Relative luminance 0.868; OKLCH L 94.6% C 0.179 H 112.8°. Best body text is #000000 at 18.36:1 contrast (WCAG AA passes).

Color values

HEX	#EFF958
RGB	rgb(239, 249, 88)
HSL	hsl(64, 93%, 66%)
HSV	hsv(64, 65%, 98%)
CMYK	cmyk(4%, 0%, 64.7%, 2.4%)
CIE-LAB	lab(94.66, -22.79, 73.01)
CIE-LCH	lch(94.66, 76.49, 107.34°)
OKLab	oklab(94.61% -0.0691 0.1647)
OKLCH	oklch(94.61% 0.179 112.8)
XYZ	xyz(71.2357, 86.8082, 22.2337)
Luminance	0.8681 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#EFF958 #6258F9

analogous

#F9B258 #EFF958 #9EF958

triadic

#EFF958 #58EFF9 #F958EF

tetradic

#EFF958 #58F9B2 #6258F9 #F9589E

square

#EFF958 #58F9B2 #6258F9 #F9589E

split-complementary

#EFF958 #589EF9 #B258F9

monochromatic

#C3CF07 #E9F71D #EFF958 #F5FB93 #FAFDCE

Accessibility & contrast

On white

1.14

#EFF958 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.36

#EFF958 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #EFF958

18.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##EFF958	#FFFFFF	#000000	##000000
##EFF958	1.00	1.14	18.36	18.36
#FFFFFF	1.14	1.00	21.00	21.00
#000000	18.36	21.00	1.00	1.00
##000000	18.36	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEE42

Deuteranopia (green-blind)

#FFF163

Tritanopia (blue-blind)

#FEEBD8

Achromatopsia (no color)

#F0F0F0

Design tokens & code

CSS

--color: #eff958;
/* rgb */ color: rgb(239, 249, 88);
/* oklch */ color: oklch(94.6% 0.179 112.8);

Tailwind

colors: {
  custom: {
    50: '#f8fb8f',
    500: '#eff958',
    950: '#000000',
  },
}

SCSS

$custom: #eff958;
$custom-light: #f8fb8f;
$custom-dark: #000000;

JSON

{
  "hex": "#eff958",
  "rgb": {
    "r": 239,
    "g": 249,
    "b": 88
  },
  "hsl": {
    "h": 63.727,
    "s": 93.064,
    "l": 66.078
  },
  "oklch": {
    "l": 0.94609,
    "c": 0.17858,
    "h": 112.8
  },
  "luminance": 0.86807
}

Semantic roles & 50–950 ramp

primary

#EFF958

secondary

#352BCA

accent

#00E60E

background

#FFFFFC

surface

#FFFFF4

border

#D7D7CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #EFF958

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

Preview Lab → · Contrast checker → · Palette generator →