#42ABC9#42ABC9

#42ABC9 is a light, moderate cyan. Relative luminance 0.345; OKLCH L 69.3% C 0.104 H 220.3°. Best body text is #000000 at 7.90:1 contrast (WCAG AA passes).

Color values

HEX	#42ABC9
RGB	rgb(66, 171, 201)
HSL	hsl(193, 56%, 52%)
HSV	hsv(193, 67%, 79%)
CMYK	cmyk(67.2%, 14.9%, 0%, 21.2%)
CIE-LAB	lab(65.36, -20.58, -24.12)
CIE-LCH	lch(65.36, 31.71, 229.53°)
OKLab	oklab(69.31% -0.0794 -0.0673)
OKLCH	oklch(69.31% 0.104 220.3)
XYZ	xyz(27.3480, 34.4981, 60.4645)
Luminance	0.3450 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42ABC9 #C96042

analogous

#42C9A3 #42ABC9 #4268C9

triadic

#42ABC9 #C942AB #ABC942

tetradic

#42ABC9 #A342C9 #C96042 #68C942

square

#42ABC9 #A342C9 #C96042 #68C942

split-complementary

#42ABC9 #C94268 #C9A342

monochromatic

#205F70 #2E87A0 #42ABC9 #72C0D7 #A1D5E4

Accessibility & contrast

On white

2.66

#42ABC9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.90

#42ABC9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42ABC9

7.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42ABC9	#FFFFFF	#000000	##000000
##42ABC9	1.00	2.66	7.90	7.90
#FFFFFF	2.66	1.00	21.00	21.00
#000000	7.90	21.00	1.00	1.00
##000000	7.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#99A7CB

Deuteranopia (green-blind)

#8699C9

Tritanopia (blue-blind)

#00B5B5

Achromatopsia (no color)

#9F9F9F

Design tokens & code

CSS

--color: #42abc9;
/* rgb */ color: rgb(66, 171, 201);
/* oklch */ color: oklch(69.3% 0.104 220.3);

Tailwind

colors: {
  custom: {
    50: '#86c4d9',
    500: '#42abc9',
    950: '#000000',
  },
}

SCSS

$custom: #42abc9;
$custom-light: #86c4d9;
$custom-dark: #000000;

JSON

{
  "hex": "#42abc9",
  "rgb": {
    "r": 66,
    "g": 171,
    "b": 201
  },
  "hsl": {
    "h": 193.333,
    "s": 55.556,
    "l": 52.353
  },
  "oklch": {
    "l": 0.69305,
    "c": 0.10406,
    "h": 220.3
  },
  "luminance": 0.34501
}

Semantic roles & 50–950 ramp

primary

#42ABC9

secondary

#D1A396

accent

#6A49DF

background

#F8FCFD

surface

#F0F8FA

border

#CBD1D3

text

#0C1214

muted

#7D8183

Preview Lab

Preview with #42ABC9

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

Preview Lab → · Contrast checker → · Palette generator →