#42B1C8#42B1C8

#42B1C8 is a light, moderate cyan. Relative luminance 0.368; OKLCH L 70.7% C 0.104 H 214.1°. Best body text is #000000 at 8.35:1 contrast (WCAG AA passes).

Color values

HEX	#42B1C8
RGB	rgb(66, 177, 200)
HSL	hsl(190, 55%, 52%)
HSV	hsv(190, 67%, 78%)
CMYK	cmyk(67%, 11.5%, 0%, 21.6%)
CIE-LAB	lab(67.10, -23.98, -20.90)
CIE-LCH	lch(67.10, 31.81, 221.08°)
OKLab	oklab(70.7% -0.0859 -0.0581)
OKLCH	oklch(70.7% 0.104 214.1)
XYZ	xyz(28.3899, 36.7695, 60.2334)
Luminance	0.3677 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B1C8 #C85942

analogous

#42C89C #42B1C8 #426EC8

triadic

#42B1C8 #C842B1 #B1C842

tetradic

#42B1C8 #9C42C8 #C85942 #6EC842

square

#42B1C8 #9C42C8 #C85942 #6EC842

split-complementary

#42B1C8 #C8426E #C89C42

monochromatic

#20626F #2E8B9F #42B1C8 #71C5D6 #A1D8E4

Accessibility & contrast

On white

2.51

#42B1C8 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.35

#42B1C8 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B1C8

8.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B1C8	#FFFFFF	#000000	##000000
##42B1C8	1.00	2.51	8.35	8.35
#FFFFFF	2.51	1.00	21.00	21.00
#000000	8.35	21.00	1.00	1.00
##000000	8.35	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A0ABC9

Deuteranopia (green-blind)

#8D9DC8

Tritanopia (blue-blind)

#00BAB8

Achromatopsia (no color)

#A3A3A3

Design tokens & code

CSS

--color: #42b1c8;
/* rgb */ color: rgb(66, 177, 200);
/* oklch */ color: oklch(70.7% 0.104 214.1);

Tailwind

colors: {
  custom: {
    50: '#86c8d8',
    500: '#42b1c8',
    950: '#000000',
  },
}

SCSS

$custom: #42b1c8;
$custom-light: #86c8d8;
$custom-dark: #000000;

JSON

{
  "hex": "#42b1c8",
  "rgb": {
    "r": 66,
    "g": 177,
    "b": 200
  },
  "hsl": {
    "h": 190.299,
    "s": 54.918,
    "l": 52.157
  },
  "oklch": {
    "l": 0.70696,
    "c": 0.10373,
    "h": 214.1
  },
  "luminance": 0.36773
}

Semantic roles & 50–950 ramp

primary

#42B1C8

secondary

#D0A096

accent

#634ADE

background

#F8FCFD

surface

#F0F8FA

border

#CBD1D3

text

#0C1314

muted

#7D8283

Preview Lab

Preview with #42B1C8

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

Preview Lab → · Contrast checker → · Palette generator →