#C9E23B#C9E23B

#C9E23B is a very light, vivid yellow. Relative luminance 0.671; OKLCH L 86.6% C 0.183 H 118.0°. Best body text is #000000 at 14.43:1 contrast (WCAG AA passes).

Color values

HEX	#C9E23B
RGB	rgb(201, 226, 59)
HSL	hsl(69, 74%, 56%)
HSV	hsv(69, 74%, 89%)
CMYK	cmyk(11.1%, 0%, 73.9%, 11.4%)
CIE-LAB	lab(85.57, -28.66, 73.34)
CIE-LCH	lch(85.57, 78.74, 111.34°)
OKLab	oklab(86.58% -0.0859 0.1618)
OKLCH	oklch(86.58% 0.183 118)
XYZ	xyz(52.0744, 67.1265, 14.3503)
Luminance	0.6713 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C9E23B #543BE2

analogous

#E2A73B #C9E23B #75E23B

triadic

#C9E23B #3BC9E2 #E23BC9

tetradic

#C9E23B #3BE2A7 #543BE2 #E23B75

square

#C9E23B #3BE2A7 #543BE2 #E23B75

split-complementary

#C9E23B #3B75E2 #A73BE2

monochromatic

#7C8E15 #AAC31D #C9E23B #D8EA70 #E6F2A6

Accessibility & contrast

On white

1.46

#C9E23B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

14.43

#C9E23B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #C9E23B

14.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C9E23B	#FFFFFF	#000000	##000000
##C9E23B	1.00	1.46	14.43	14.43
#FFFFFF	1.46	1.00	21.00	21.00
#000000	14.43	21.00	1.00	1.00
##000000	14.43	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#F1D614

Deuteranopia (green-blind)

#EFD74A

Tritanopia (blue-blind)

#D5D5C2

Achromatopsia (no color)

#D6D6D6

Design tokens & code

CSS

--color: #c9e23b;
/* rgb */ color: rgb(201, 226, 59);
/* oklch */ color: oklch(86.6% 0.183 118.0);

Tailwind

colors: {
  custom: {
    50: '#ddeb7d',
    500: '#c9e23b',
    950: '#000000',
  },
}

SCSS

$custom: #c9e23b;
$custom-light: #ddeb7d;
$custom-dark: #000000;

JSON

{
  "hex": "#c9e23b",
  "rgb": {
    "r": 201,
    "g": 226,
    "b": 59
  },
  "hsl": {
    "h": 68.982,
    "s": 74.222,
    "l": 55.882
  },
  "oklch": {
    "l": 0.86579,
    "c": 0.18324,
    "h": 118
  },
  "luminance": 0.67126
}

Semantic roles & 50–950 ramp

primary

#C9E23B

secondary

#3D2E93

accent

#37F153

background

#FEFEFB

surface

#FCFDF2

border

#D5D5CC

text

#16160B

muted

#84847E

Preview Lab

Preview with #C9E23B

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

Preview Lab → · Contrast checker → · Palette generator →