#42A0CF#42A0CF

#42A0CF is a light, moderate cyan. Relative luminance 0.308; OKLCH L 67.0% C 0.112 H 233.8°. Best body text is #000000 at 7.16:1 contrast (WCAG AA passes).

Color values

HEX	#42A0CF
RGB	rgb(66, 160, 207)
HSL	hsl(200, 59%, 54%)
HSV	hsv(200, 68%, 81%)
CMYK	cmyk(68.1%, 22.7%, 0%, 18.8%)
CIE-LAB	lab(62.34, -12.78, -32.11)
CIE-LCH	lch(62.34, 34.56, 248.29°)
OKLab	oklab(66.97% -0.066 -0.0902)
OKLCH	oklch(66.97% 0.112 233.8)
XYZ	xyz(26.0756, 30.8020, 63.5905)
Luminance	0.3080 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42A0CF #CF7142

analogous

#42CFB7 #42A0CF #4259CF

triadic

#42A0CF #CF42A0 #A0CF42

tetradic

#42A0CF #B742CF #CF7142 #59CF42

square

#42A0CF #B742CF #CF7142 #59CF42

split-complementary

#42A0CF #CF4259 #CFB742

monochromatic

#1F5A78 #2B7FA9 #42A0CF #73B9DB #A4D1E8

Accessibility & contrast

On white

2.93

#42A0CF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.16

#42A0CF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42A0CF

7.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42A0CF	#FFFFFF	#000000	##000000
##42A0CF	1.00	2.93	7.16	7.16
#FFFFFF	2.93	1.00	21.00	21.00
#000000	7.16	21.00	1.00	1.00
##000000	7.16	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#899FD1

Deuteranopia (green-blind)

#7691CE

Tritanopia (blue-blind)

#00ACB0

Achromatopsia (no color)

#979797

Design tokens & code

CSS

--color: #42a0cf;
/* rgb */ color: rgb(66, 160, 207);
/* oklch */ color: oklch(67.0% 0.112 233.8);

Tailwind

colors: {
  custom: {
    50: '#86bcde',
    500: '#42a0cf',
    950: '#000000',
  },
}

SCSS

$custom: #42a0cf;
$custom-light: #86bcde;
$custom-dark: #000000;

JSON

{
  "hex": "#42a0cf",
  "rgb": {
    "r": 66,
    "g": 160,
    "b": 207
  },
  "hsl": {
    "h": 200,
    "s": 59.494,
    "l": 53.529
  },
  "oklch": {
    "l": 0.66973,
    "c": 0.11174,
    "h": 233.8
  },
  "luminance": 0.30805
}

Semantic roles & 50–950 ramp

primary

#42A0CF

secondary

#D5AC98

accent

#7A45E3

background

#F8FBFD

surface

#F0F6FB

border

#CBD0D4

text

#0C1215

muted

#7D8183

Preview Lab

Preview with #42A0CF

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

Preview Lab → · Contrast checker → · Palette generator →