#42A0CB#42A0CB

#42A0CB is a light, moderate cyan. Relative luminance 0.306; OKLCH L 66.8% C 0.108 H 231.4°. Best body text is #000000 at 7.12:1 contrast (WCAG AA passes).

Color values

HEX	#42A0CB
RGB	rgb(66, 160, 203)
HSL	hsl(199, 57%, 53%)
HSV	hsv(199, 67%, 80%)
CMYK	cmyk(67.5%, 21.2%, 0%, 20.4%)
CIE-LAB	lab(62.18, -14.09, -30.13)
CIE-LCH	lch(62.18, 33.26, 244.93°)
OKLab	oklab(66.79% -0.0674 -0.0845)
OKLCH	oklch(66.79% 0.108 231.4)
XYZ	xyz(25.5928, 30.6089, 61.0476)
Luminance	0.3061 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42A0CB #CB6D42

analogous

#42CBB1 #42A0CB #425CCB

triadic

#42A0CB #CB42A0 #A0CB42

tetradic

#42A0CB #B142CB #CB6D42 #5CCB42

square

#42A0CB #B142CB #CB6D42 #5CCB42

split-complementary

#42A0CB #CB425C #CBB142

monochromatic

#205973 #2D7EA3 #42A0CB #72B8D8 #A2D0E5

Accessibility & contrast

On white

2.95

#42A0CB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.12

#42A0CB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42A0CB

7.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42A0CB	#FFFFFF	#000000	##000000
##42A0CB	1.00	2.95	7.12	7.12
#FFFFFF	2.95	1.00	21.00	21.00
#000000	7.12	21.00	1.00	1.00
##000000	7.12	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8A9ECD

Deuteranopia (green-blind)

#7890CA

Tritanopia (blue-blind)

#00ACAE

Achromatopsia (no color)

#969696

Design tokens & code

CSS

--color: #42a0cb;
/* rgb */ color: rgb(66, 160, 203);
/* oklch */ color: oklch(66.8% 0.108 231.4);

Tailwind

colors: {
  custom: {
    50: '#86bcdb',
    500: '#42a0cb',
    950: '#000000',
  },
}

SCSS

$custom: #42a0cb;
$custom-light: #86bcdb;
$custom-dark: #000000;

JSON

{
  "hex": "#42a0cb",
  "rgb": {
    "r": 66,
    "g": 160,
    "b": 203
  },
  "hsl": {
    "h": 198.832,
    "s": 56.846,
    "l": 52.745
  },
  "oklch": {
    "l": 0.66788,
    "c": 0.10808,
    "h": 231.4
  },
  "luminance": 0.30612
}

Semantic roles & 50–950 ramp

primary

#42A0CB

secondary

#D2A997

accent

#7848E0

background

#F8FBFD

surface

#F0F6FB

border

#CBD0D4

text

#0C1215

muted

#7D8183

Preview Lab

Preview with #42A0CB

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

Preview Lab → · Contrast checker → · Palette generator →