#42A3CE#42A3CE

#42A3CE is a light, moderate cyan. Relative luminance 0.318; OKLCH L 67.6% C 0.110 H 230.7°. Best body text is #000000 at 7.36:1 contrast (WCAG AA passes).

Color values

HEX	#42A3CE
RGB	rgb(66, 163, 206)
HSL	hsl(198, 59%, 53%)
HSV	hsv(198, 68%, 81%)
CMYK	cmyk(68%, 20.9%, 0%, 19.2%)
CIE-LAB	lab(63.18, -14.74, -30.25)
CIE-LCH	lch(63.18, 33.65, 244.01°)
OKLab	oklab(67.63% -0.0694 -0.0848)
OKLCH	oklch(67.63% 0.11 230.7)
XYZ	xyz(26.4801, 31.8060, 63.1242)
Luminance	0.3181 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42A3CE #CE6D42

analogous

#42CEB3 #42A3CE #425DCE

triadic

#42A3CE #CE42A3 #A3CE42

tetradic

#42A3CE #B342CE #CE6D42 #5DCE42

square

#42A3CE #B342CE #CE6D42 #5DCE42

split-complementary

#42A3CE #CE425D #CEB342

monochromatic

#1F5C77 #2B81A7 #42A3CE #73BBDB #A3D2E7

Accessibility & contrast

On white

2.85

#42A3CE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.36

#42A3CE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42A3CE

7.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42A3CE	#FFFFFF	#000000	##000000
##42A3CE	1.00	2.85	7.36	7.36
#FFFFFF	2.85	1.00	21.00	21.00
#000000	7.36	21.00	1.00	1.00
##000000	7.36	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8DA1D0

Deuteranopia (green-blind)

#7A93CD

Tritanopia (blue-blind)

#00AFB1

Achromatopsia (no color)

#999999

Design tokens & code

CSS

--color: #42a3ce;
/* rgb */ color: rgb(66, 163, 206);
/* oklch */ color: oklch(67.6% 0.110 230.7);

Tailwind

colors: {
  custom: {
    50: '#86bedd',
    500: '#42a3ce',
    950: '#000000',
  },
}

SCSS

$custom: #42a3ce;
$custom-light: #86bedd;
$custom-dark: #000000;

JSON

{
  "hex": "#42a3ce",
  "rgb": {
    "r": 66,
    "g": 163,
    "b": 206
  },
  "hsl": {
    "h": 198.429,
    "s": 58.824,
    "l": 53.333
  },
  "oklch": {
    "l": 0.6763,
    "c": 0.10956,
    "h": 230.7
  },
  "luminance": 0.31809
}

Semantic roles & 50–950 ramp

primary

#42A3CE

secondary

#D4AA98

accent

#7646E2

background

#F8FBFD

surface

#F0F6FB

border

#CBD0D4

text

#0C1215

muted

#7D8183

Preview Lab

Preview with #42A3CE

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

Preview Lab → · Contrast checker → · Palette generator →