#ECF379#ECF379

#ECF379 is a very light, vivid yellow. Relative luminance 0.833; OKLCH L 93.4% C 0.146 H 111.8°. Best body text is #000000 at 17.66:1 contrast (WCAG AA passes).

Color values

HEX	#ECF379
RGB	rgb(236, 243, 121)
HSL	hsl(63, 84%, 71%)
HSV	hsv(63, 50%, 95%)
CMYK	cmyk(2.9%, 0%, 50.2%, 4.7%)
CIE-LAB	lab(93.15, -18.75, 57.37)
CIE-LCH	lch(93.15, 60.36, 108.10°)
OKLab	oklab(93.45% -0.0542 0.1353)
OKLCH	oklch(93.45% 0.146 111.8)
XYZ	xyz(70.0952, 83.3159, 30.4745)
Luminance	0.8331 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#ECF379 #8079F3

analogous

#F3BD79 #ECF379 #AFF379

triadic

#ECF379 #79ECF3 #F379EC

tetradic

#ECF379 #79F3BD #8079F3 #F379AF

square

#ECF379 #79F3BD #8079F3 #F379AF

split-complementary

#ECF379 #79AFF3 #BD79F3

monochromatic

#D2DE14 #E4EE41 #ECF379 #F4F8B1 #FBFCE3

Accessibility & contrast

On white

1.19

#ECF379 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.66

#ECF379 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #ECF379

17.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##ECF379	#FFFFFF	#000000	##000000
##ECF379	1.00	1.19	17.66	17.66
#FFFFFF	1.19	1.00	21.00	21.00
#000000	17.66	21.00	1.00	1.00
##000000	17.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEA6E

Deuteranopia (green-blind)

#FFED7F

Tritanopia (blue-blind)

#F9E7D7

Achromatopsia (no color)

#EBEBEB

Design tokens & code

CSS

--color: #ecf379;
/* rgb */ color: rgb(236, 243, 121);
/* oklch */ color: oklch(93.4% 0.146 111.8);

Tailwind

colors: {
  custom: {
    50: '#f4f6a3',
    500: '#ecf379',
    950: '#000000',
  },
}

SCSS

$custom: #ecf379;
$custom-light: #f4f6a3;
$custom-dark: #000000;

JSON

{
  "hex": "#ecf379",
  "rgb": {
    "r": 236,
    "g": 243,
    "b": 121
  },
  "hsl": {
    "h": 63.443,
    "s": 83.562,
    "l": 71.373
  },
  "oklch": {
    "l": 0.93446,
    "c": 0.14574,
    "h": 111.8
  },
  "luminance": 0.83315
}

Semantic roles & 50–950 ramp

primary

#ECF379

secondary

#4B43CE

accent

#06E012

background

#FFFFFC

surface

#FFFEF6

border

#D7D6D0

text

#17170F

muted

#858580

Preview Lab

Preview with #ECF379

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

Preview Lab → · Contrast checker → · Palette generator →