#42A7CF#42A7CF

#42A7CF is a light, moderate cyan. Relative luminance 0.333; OKLCH L 68.6% C 0.109 H 227.9°. Best body text is #000000 at 7.66:1 contrast (WCAG AA passes).

Color values

HEX	#42A7CF
RGB	rgb(66, 167, 207)
HSL	hsl(197, 59%, 54%)
HSV	hsv(197, 68%, 81%)
CMYK	cmyk(68.1%, 19.3%, 0%, 18.8%)
CIE-LAB	lab(64.40, -16.57, -28.92)
CIE-LCH	lch(64.40, 33.33, 240.19°)
OKLab	oklab(68.62% -0.0731 -0.081)
OKLCH	oklch(68.62% 0.109 227.9)
XYZ	xyz(27.3235, 33.2977, 64.0065)
Luminance	0.3330 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42A7CF #CF6A42

analogous

#42CFB0 #42A7CF #4260CF

triadic

#42A7CF #CF42A7 #A7CF42

tetradic

#42A7CF #B042CF #CF6A42 #60CF42

square

#42A7CF #B042CF #CF6A42 #60CF42

split-complementary

#42A7CF #CF4260 #CFB042

monochromatic

#1F5F78 #2B85A9 #42A7CF #73BEDB #A4D4E8

Accessibility & contrast

On white

2.74

#42A7CF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.66

#42A7CF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42A7CF

7.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42A7CF	#FFFFFF	#000000	##000000
##42A7CF	1.00	2.74	7.66	7.66
#FFFFFF	2.74	1.00	21.00	21.00
#000000	7.66	21.00	1.00	1.00
##000000	7.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#92A4D1

Deuteranopia (green-blind)

#7E96CE

Tritanopia (blue-blind)

#00B2B4

Achromatopsia (no color)

#9C9C9C

Design tokens & code

CSS

--color: #42a7cf;
/* rgb */ color: rgb(66, 167, 207);
/* oklch */ color: oklch(68.6% 0.109 227.9);

Tailwind

colors: {
  custom: {
    50: '#87c1dd',
    500: '#42a7cf',
    950: '#000000',
  },
}

SCSS

$custom: #42a7cf;
$custom-light: #87c1dd;
$custom-dark: #000000;

JSON

{
  "hex": "#42a7cf",
  "rgb": {
    "r": 66,
    "g": 167,
    "b": 207
  },
  "hsl": {
    "h": 197.021,
    "s": 59.494,
    "l": 53.529
  },
  "oklch": {
    "l": 0.68616,
    "c": 0.10906,
    "h": 227.9
  },
  "luminance": 0.33301
}

Semantic roles & 50–950 ramp

primary

#42A7CF

secondary

#D5A998

accent

#7245E3

background

#F8FBFD

surface

#F0F7FB

border

#CBD0D4

text

#0D1215

muted

#7D8183

Preview Lab

Preview with #42A7CF

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

Preview Lab → · Contrast checker → · Palette generator →