#42A5CA#42A5CA

#42A5CA is a light, moderate cyan. Relative luminance 0.323; OKLCH L 67.9% C 0.106 H 226.4°. Best body text is #000000 at 7.47:1 contrast (WCAG AA passes).

Color values

HEX	#42A5CA
RGB	rgb(66, 165, 202)
HSL	hsl(196, 56%, 53%)
HSV	hsv(196, 67%, 79%)
CMYK	cmyk(67.3%, 18.3%, 0%, 20.8%)
CIE-LAB	lab(63.61, -17.11, -27.35)
CIE-LCH	lch(63.61, 32.26, 237.98°)
OKLab	oklab(67.92% -0.0729 -0.0765)
OKLCH	oklch(67.92% 0.106 226.4)
XYZ	xyz(26.3583, 32.3299, 60.7168)
Luminance	0.3233 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42A5CA #CA6742

analogous

#42CAAB #42A5CA #4261CA

triadic

#42A5CA #CA42A5 #A5CA42

tetradic

#42A5CA #AB42CA #CA6742 #61CA42

square

#42A5CA #AB42CA #CA6742 #61CA42

split-complementary

#42A5CA #CA4261 #CAAB42

monochromatic

#205B72 #2D82A2 #42A5CA #72BCD7 #A2D3E5

Accessibility & contrast

On white

2.81

#42A5CA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.47

#42A5CA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42A5CA

7.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42A5CA	#FFFFFF	#000000	##000000
##42A5CA	1.00	2.81	7.47	7.47
#FFFFFF	2.81	1.00	21.00	21.00
#000000	7.47	21.00	1.00	1.00
##000000	7.47	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#91A2CC

Deuteranopia (green-blind)

#7E94CA

Tritanopia (blue-blind)

#00B0B1

Achromatopsia (no color)

#9A9A9A

Design tokens & code

CSS

--color: #42a5ca;
/* rgb */ color: rgb(66, 165, 202);
/* oklch */ color: oklch(67.9% 0.106 226.4);

Tailwind

colors: {
  custom: {
    50: '#86bfda',
    500: '#42a5ca',
    950: '#000000',
  },
}

SCSS

$custom: #42a5ca;
$custom-light: #86bfda;
$custom-dark: #000000;

JSON

{
  "hex": "#42a5ca",
  "rgb": {
    "r": 66,
    "g": 165,
    "b": 202
  },
  "hsl": {
    "h": 196.324,
    "s": 56.198,
    "l": 52.549
  },
  "oklch": {
    "l": 0.67923,
    "c": 0.10565,
    "h": 226.4
  },
  "luminance": 0.32333
}

Semantic roles & 50–950 ramp

primary

#42A5CA

secondary

#D1A696

accent

#7148DF

background

#F8FBFD

surface

#F0F7FA

border

#CBD0D3

text

#0C1214

muted

#7D8183

Preview Lab

Preview with #42A5CA

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

Preview Lab → · Contrast checker → · Palette generator →