#42A3CD#42A3CD

#42A3CD is a light, moderate cyan. Relative luminance 0.318; OKLCH L 67.6% C 0.109 H 230.1°. Best body text is #000000 at 7.35:1 contrast (WCAG AA passes).

Color values

HEX	#42A3CD
RGB	rgb(66, 163, 205)
HSL	hsl(198, 58%, 53%)
HSV	hsv(198, 68%, 80%)
CMYK	cmyk(67.8%, 20.5%, 0%, 19.6%)
CIE-LAB	lab(63.14, -15.07, -29.75)
CIE-LCH	lch(63.14, 33.35, 243.14°)
OKLab	oklab(67.58% -0.0698 -0.0834)
OKLCH	oklch(67.58% 0.109 230.1)
XYZ	xyz(26.3590, 31.7575, 62.4864)
Luminance	0.3176 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42A3CD #CD6C42

analogous

#42CDB1 #42A3CD #425ECD

triadic

#42A3CD #CD42A3 #A3CD42

tetradic

#42A3CD #B142CD #CD6C42 #5ECD42

square

#42A3CD #B142CD #CD6C42 #5ECD42

split-complementary

#42A3CD #CD425E #CDB142

monochromatic

#1F5B76 #2C81A6 #42A3CD #72BBDA #A3D2E7

Accessibility & contrast

On white

2.86

#42A3CD on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.35

#42A3CD on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42A3CD

7.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42A3CD	#FFFFFF	#000000	##000000
##42A3CD	1.00	2.86	7.35	7.35
#FFFFFF	2.86	1.00	21.00	21.00
#000000	7.35	21.00	1.00	1.00
##000000	7.35	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8EA1CF

Deuteranopia (green-blind)

#7A93CC

Tritanopia (blue-blind)

#00AFB1

Achromatopsia (no color)

#999999

Design tokens & code

CSS

--color: #42a3cd;
/* rgb */ color: rgb(66, 163, 205);
/* oklch */ color: oklch(67.6% 0.109 230.1);

Tailwind

colors: {
  custom: {
    50: '#86bedc',
    500: '#42a3cd',
    950: '#000000',
  },
}

SCSS

$custom: #42a3cd;
$custom-light: #86bedc;
$custom-dark: #000000;

JSON

{
  "hex": "#42a3cd",
  "rgb": {
    "r": 66,
    "g": 163,
    "b": 205
  },
  "hsl": {
    "h": 198.129,
    "s": 58.159,
    "l": 53.137
  },
  "oklch": {
    "l": 0.67585,
    "c": 0.1087,
    "h": 230.1
  },
  "luminance": 0.3176
}

Semantic roles & 50–950 ramp

primary

#42A3CD

secondary

#D3AA97

accent

#7546E1

background

#F8FBFD

surface

#F0F6FB

border

#CBD0D4

text

#0C1215

muted

#7D8183

Preview Lab

Preview with #42A3CD

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

Preview Lab → · Contrast checker → · Palette generator →