#42A1CF#42A1CF

#42A1CF is a light, moderate cyan. Relative luminance 0.312; OKLCH L 67.2% C 0.111 H 233.0°. Best body text is #000000 at 7.23:1 contrast (WCAG AA passes).

Color values

HEX	#42A1CF
RGB	rgb(66, 161, 207)
HSL	hsl(200, 59%, 54%)
HSV	hsv(200, 68%, 81%)
CMYK	cmyk(68.1%, 22.2%, 0%, 18.8%)
CIE-LAB	lab(62.63, -13.33, -31.65)
CIE-LCH	lch(62.63, 34.34, 247.16°)
OKLab	oklab(67.21% -0.067 -0.0888)
OKLCH	oklch(67.21% 0.111 233)
XYZ	xyz(26.2497, 31.1501, 63.6485)
Luminance	0.3115 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42A1CF #CF7042

analogous

#42CFB6 #42A1CF #425ACF

triadic

#42A1CF #CF42A1 #A1CF42

tetradic

#42A1CF #B642CF #CF7042 #5ACF42

square

#42A1CF #B642CF #CF7042 #5ACF42

split-complementary

#42A1CF #CF425A #CFB642

monochromatic

#1F5B78 #2B80A9 #42A1CF #73B9DB #A4D2E8

Accessibility & contrast

On white

2.90

#42A1CF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.23

#42A1CF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42A1CF

7.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42A1CF	#FFFFFF	#000000	##000000
##42A1CF	1.00	2.90	7.23	7.23
#FFFFFF	2.90	1.00	21.00	21.00
#000000	7.23	21.00	1.00	1.00
##000000	7.23	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8A9FD1

Deuteranopia (green-blind)

#7791CE

Tritanopia (blue-blind)

#00ADB0

Achromatopsia (no color)

#979797

Design tokens & code

CSS

--color: #42a1cf;
/* rgb */ color: rgb(66, 161, 207);
/* oklch */ color: oklch(67.2% 0.111 233.0);

Tailwind

colors: {
  custom: {
    50: '#86bcde',
    500: '#42a1cf',
    950: '#000000',
  },
}

SCSS

$custom: #42a1cf;
$custom-light: #86bcde;
$custom-dark: #000000;

JSON

{
  "hex": "#42a1cf",
  "rgb": {
    "r": 66,
    "g": 161,
    "b": 207
  },
  "hsl": {
    "h": 199.574,
    "s": 59.494,
    "l": 53.529
  },
  "oklch": {
    "l": 0.67207,
    "c": 0.11128,
    "h": 233
  },
  "luminance": 0.31153
}

Semantic roles & 50–950 ramp

primary

#42A1CF

secondary

#D5AC98

accent

#7945E3

background

#F8FBFD

surface

#F0F6FB

border

#CBD0D4

text

#0C1215

muted

#7D8183

Preview Lab

Preview with #42A1CF

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

Preview Lab → · Contrast checker → · Palette generator →