#42A9DB#42A9DB

#42A9DB is a light, moderate cyan. Relative luminance 0.346; OKLCH L 69.6% C 0.119 H 233.4°. Best body text is #000000 at 7.93:1 contrast (WCAG AA passes).

Color values

HEX	#42A9DB
RGB	rgb(66, 169, 219)
HSL	hsl(200, 68%, 56%)
HSV	hsv(200, 70%, 86%)
CMYK	cmyk(69.9%, 22.8%, 0%, 14.1%)
CIE-LAB	lab(65.47, -13.73, -33.90)
CIE-LCH	lch(65.47, 36.57, 247.95°)
OKLab	oklab(69.63% -0.0708 -0.0952)
OKLCH	oklch(69.63% 0.119 233.4)
XYZ	xyz(29.2158, 34.6454, 72.1516)
Luminance	0.3465 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42A9DB #DB7442

analogous

#42DBC0 #42A9DB #425CDB

triadic

#42A9DB #DB42A9 #A9DB42

tetradic

#42A9DB #C042DB #DB7442 #5CDB42

square

#42A9DB #C042DB #DB7442 #5CDB42

split-complementary

#42A9DB #DB425C #DBC042

monochromatic

#1A6489 #248ABC #42A9DB #75C0E5 #A9D8EF

Accessibility & contrast

On white

2.65

#42A9DB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.93

#42A9DB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42A9DB

7.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42A9DB	#FFFFFF	#000000	##000000
##42A9DB	1.00	2.65	7.93	7.93
#FFFFFF	2.65	1.00	21.00	21.00
#000000	7.93	21.00	1.00	1.00
##000000	7.93	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#90A7DD

Deuteranopia (green-blind)

#7C98DA

Tritanopia (blue-blind)

#00B6BA

Achromatopsia (no color)

#9F9F9F

Design tokens & code

CSS

--color: #42a9db;
/* rgb */ color: rgb(66, 169, 219);
/* oklch */ color: oklch(69.6% 0.119 233.4);

Tailwind

colors: {
  custom: {
    50: '#88c2e6',
    500: '#42a9db',
    950: '#000000',
  },
}

SCSS

$custom: #42a9db;
$custom-light: #88c2e6;
$custom-dark: #000000;

JSON

{
  "hex": "#42a9db",
  "rgb": {
    "r": 66,
    "g": 169,
    "b": 219
  },
  "hsl": {
    "h": 199.608,
    "s": 68,
    "l": 55.882
  },
  "oklch": {
    "l": 0.6963,
    "c": 0.11869,
    "h": 233.4
  },
  "luminance": 0.34649
}

Semantic roles & 50–950 ramp

primary

#42A9DB

secondary

#DCB19D

accent

#763DEB

background

#F9FBFE

surface

#F1F7FC

border

#CBD0D5

text

#0D1216

muted

#7E8184

Preview Lab

Preview with #42A9DB

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

Preview Lab → · Contrast checker → · Palette generator →