#ECF258#ECF258

#ECF258 is a very light, vivid yellow. Relative luminance 0.820; OKLCH L 92.9% C 0.172 H 111.5°. Best body text is #000000 at 17.41:1 contrast (WCAG AA passes).

Color values

HEX	#ECF258
RGB	rgb(236, 242, 88)
HSL	hsl(62, 86%, 65%)
HSV	hsv(62, 64%, 95%)
CMYK	cmyk(2.5%, 0%, 63.6%, 5.1%)
CIE-LAB	lab(92.59, -20.65, 70.81)
CIE-LCH	lch(92.59, 73.76, 106.26°)
OKLab	oklab(92.9% -0.0629 0.1601)
OKLCH	oklch(92.9% 0.172 111.5)
XYZ	xyz(68.1077, 82.0433, 21.4788)
Luminance	0.8204 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF258 #5E58F2

analogous

#F2AB58 #ECF258 #9FF258

triadic

#ECF258 #58ECF2 #F258EC

tetradic

#ECF258 #58F2AB #5E58F2 #F2589F

square

#ECF258 #58F2AB #5E58F2 #F2589F

split-complementary

#ECF258 #589FF2 #AB58F2

monochromatic

#BAC10F #E6EE1F #ECF258 #F2F691 #F9FBCA

Accessibility & contrast

On white

1.21

#ECF258 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.41

#ECF258 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF258

17.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF258	#FFFFFF	#000000	##000000
##ECF258	1.00	1.21	17.41	17.41
#FFFFFF	1.21	1.00	21.00	21.00
#000000	17.41	21.00	1.00	1.00
##000000	17.41	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE843

Deuteranopia (green-blind)

#FFEC62

Tritanopia (blue-blind)

#FBE4D2

Achromatopsia (no color)

#EAEAEA

Design tokens & code

CSS

--color: #ecf258;
/* rgb */ color: rgb(236, 242, 88);
/* oklch */ color: oklch(92.9% 0.172 111.5);

Tailwind

colors: {
  custom: {
    50: '#f5f68e',
    500: '#ecf258',
    950: '#000000',
  },
}

SCSS

$custom: #ecf258;
$custom-light: #f5f68e;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf258",
  "rgb": {
    "r": 236,
    "g": 242,
    "b": 88
  },
  "hsl": {
    "h": 62.338,
    "s": 85.556,
    "l": 64.706
  },
  "oklch": {
    "l": 0.92904,
    "c": 0.17201,
    "h": 111.5
  },
  "luminance": 0.82042
}

Semantic roles & 50–950 ramp

primary

#ECF258

secondary

#3530BE

accent

#03E20C

background

#FFFFFC

surface

#FFFEF4

border

#D7D6CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #ECF258

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

Preview Lab → · Contrast checker → · Palette generator →