#ECF05C#ECF05C

#ECF05C is a very light, vivid yellow. Relative luminance 0.809; OKLCH L 92.5% C 0.167 H 110.7°. Best body text is #000000 at 17.19:1 contrast (WCAG AA passes).

Color values

HEX	#ECF05C
RGB	rgb(236, 240, 92)
HSL	hsl(62, 83%, 65%)
HSV	hsv(62, 62%, 94%)
CMYK	cmyk(1.7%, 0%, 61.7%, 5.9%)
CIE-LAB	lab(92.10, -19.44, 68.70)
CIE-LCH	lch(92.10, 71.40, 105.80°)
OKLab	oklab(92.52% -0.0591 0.1562)
OKLCH	oklch(92.52% 0.167 110.7)
XYZ	xyz(67.6859, 80.9274, 22.1782)
Luminance	0.8093 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF05C #605CF0

analogous

#F0AA5C #ECF05C #A2F05C

triadic

#ECF05C #5CECF0 #F05CEC

tetradic

#ECF05C #5CF0AA #605CF0 #F05CA2

square

#ECF05C #5CF0AA #605CF0 #F05CA2

split-complementary

#ECF05C #5CA2F0 #AA5CF0

monochromatic

#BBC012 #E5EB24 #ECF05C #F3F594 #F9FACC

Accessibility & contrast

On white

1.22

#ECF05C on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.19

#ECF05C on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF05C

17.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF05C	#FFFFFF	#000000	##000000
##ECF05C	1.00	1.22	17.19	17.19
#FFFFFF	1.22	1.00	21.00	21.00
#000000	17.19	21.00	1.00	1.00
##000000	17.19	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE649

Deuteranopia (green-blind)

#FFEA65

Tritanopia (blue-blind)

#FBE2D1

Achromatopsia (no color)

#E8E8E8

Design tokens & code

CSS

--color: #ecf05c;
/* rgb */ color: rgb(236, 240, 92);
/* oklch */ color: oklch(92.5% 0.167 110.7);

Tailwind

colors: {
  custom: {
    50: '#f5f490',
    500: '#ecf05c',
    950: '#000000',
  },
}

SCSS

$custom: #ecf05c;
$custom-light: #f5f490;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf05c",
  "rgb": {
    "r": 236,
    "g": 240,
    "b": 92
  },
  "hsl": {
    "h": 61.622,
    "s": 83.146,
    "l": 65.098
  },
  "oklch": {
    "l": 0.92518,
    "c": 0.16703,
    "h": 110.7
  },
  "luminance": 0.80926
}

Semantic roles & 50–950 ramp

primary

#ECF05C

secondary

#3632BE

accent

#06E00C

background

#FFFFFC

surface

#FFFEF4

border

#D7D6CE

text

#17170D

muted

#85857F

Preview Lab

Preview with #ECF05C

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

Preview Lab → · Contrast checker → · Palette generator →