#42A1CB#42A1CB

#42A1CB is a light, moderate cyan. Relative luminance 0.310; OKLCH L 67.0% C 0.108 H 230.6°. Best body text is #000000 at 7.19:1 contrast (WCAG AA passes).

Color values

HEX	#42A1CB
RGB	rgb(66, 161, 203)
HSL	hsl(198, 57%, 53%)
HSV	hsv(198, 67%, 80%)
CMYK	cmyk(67.5%, 20.7%, 0%, 20.4%)
CIE-LAB	lab(62.47, -14.64, -29.67)
CIE-LCH	lch(62.47, 33.09, 243.75°)
OKLab	oklab(67.02% -0.0684 -0.0832)
OKLCH	oklch(67.02% 0.108 230.6)
XYZ	xyz(25.7669, 30.9570, 61.1057)
Luminance	0.3096 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42A1CB #CB6C42

analogous

#42CBB0 #42A1CB #425DCB

triadic

#42A1CB #CB42A1 #A1CB42

tetradic

#42A1CB #B042CB #CB6C42 #5DCB42

square

#42A1CB #B042CB #CB6C42 #5DCB42

split-complementary

#42A1CB #CB425D #CBB042

monochromatic

#205973 #2D7FA3 #42A1CB #72B9D8 #A2D1E5

Accessibility & contrast

On white

2.92

#42A1CB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.19

#42A1CB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42A1CB

7.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42A1CB	#FFFFFF	#000000	##000000
##42A1CB	1.00	2.92	7.19	7.19
#FFFFFF	2.92	1.00	21.00	21.00
#000000	7.19	21.00	1.00	1.00
##000000	7.19	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8C9FCD

Deuteranopia (green-blind)

#7991CA

Tritanopia (blue-blind)

#00ADAF

Achromatopsia (no color)

#979797

Design tokens & code

CSS

--color: #42a1cb;
/* rgb */ color: rgb(66, 161, 203);
/* oklch */ color: oklch(67.0% 0.108 230.6);

Tailwind

colors: {
  custom: {
    50: '#86bcdb',
    500: '#42a1cb',
    950: '#000000',
  },
}

SCSS

$custom: #42a1cb;
$custom-light: #86bcdb;
$custom-dark: #000000;

JSON

{
  "hex": "#42a1cb",
  "rgb": {
    "r": 66,
    "g": 161,
    "b": 203
  },
  "hsl": {
    "h": 198.394,
    "s": 56.846,
    "l": 52.745
  },
  "oklch": {
    "l": 0.67023,
    "c": 0.1077,
    "h": 230.6
  },
  "luminance": 0.3096
}

Semantic roles & 50–950 ramp

primary

#42A1CB

secondary

#D2A997

accent

#7648E0

background

#F8FBFD

surface

#F0F6FB

border

#CBD0D4

text

#0C1215

muted

#7D8183

Preview Lab

Preview with #42A1CB

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

Preview Lab → · Contrast checker → · Palette generator →