#42A8DB#42A8DB

#42A8DB is a light, moderate cyan. Relative luminance 0.343; OKLCH L 69.4% C 0.119 H 234.1°. Best body text is #000000 at 7.86:1 contrast (WCAG AA passes).

Color values

HEX	#42A8DB
RGB	rgb(66, 168, 219)
HSL	hsl(200, 68%, 56%)
HSV	hsv(200, 70%, 86%)
CMYK	cmyk(69.9%, 23.3%, 0%, 14.1%)
CIE-LAB	lab(65.18, -13.19, -34.35)
CIE-LCH	lch(65.18, 36.79, 249.00°)
OKLab	oklab(69.4% -0.0698 -0.0966)
OKLCH	oklch(69.4% 0.119 234.1)
XYZ	xyz(29.0305, 34.2747, 72.0898)
Luminance	0.3428 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42A8DB #DB7542

analogous

#42DBC1 #42A8DB #425BDB

triadic

#42A8DB #DB42A8 #A8DB42

tetradic

#42A8DB #C142DB #DB7542 #5BDB42

square

#42A8DB #C142DB #DB7542 #5BDB42

split-complementary

#42A8DB #DB425B #DBC142

monochromatic

#1A6489 #2489BC #42A8DB #75C0E5 #A9D7EF

Accessibility & contrast

On white

2.67

#42A8DB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.86

#42A8DB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42A8DB

7.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42A8DB	#FFFFFF	#000000	##000000
##42A8DB	1.00	2.67	7.86	7.86
#FFFFFF	2.67	1.00	21.00	21.00
#000000	7.86	21.00	1.00	1.00
##000000	7.86	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8FA7DD

Deuteranopia (green-blind)

#7A98DA

Tritanopia (blue-blind)

#00B5B9

Achromatopsia (no color)

#9E9E9E

Design tokens & code

CSS

--color: #42a8db;
/* rgb */ color: rgb(66, 168, 219);
/* oklch */ color: oklch(69.4% 0.119 234.1);

Tailwind

colors: {
  custom: {
    50: '#88c1e6',
    500: '#42a8db',
    950: '#000000',
  },
}

SCSS

$custom: #42a8db;
$custom-light: #88c1e6;
$custom-dark: #000000;

JSON

{
  "hex": "#42a8db",
  "rgb": {
    "r": 66,
    "g": 168,
    "b": 219
  },
  "hsl": {
    "h": 200,
    "s": 68,
    "l": 55.882
  },
  "oklch": {
    "l": 0.69398,
    "c": 0.11916,
    "h": 234.1
  },
  "luminance": 0.34278
}

Semantic roles & 50–950 ramp

primary

#42A8DB

secondary

#DCB29D

accent

#773DEB

background

#F9FBFE

surface

#F1F7FC

border

#CBD0D5

text

#0D1216

muted

#7E8184

Preview Lab

Preview with #42A8DB

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

Preview Lab → · Contrast checker → · Palette generator →