#42B1DB#42B1DB

#42B1DB is a light, moderate cyan. Relative luminance 0.377; OKLCH L 71.5% C 0.116 H 227.2°. Best body text is #000000 at 8.54:1 contrast (WCAG AA passes).

Color values

HEX	#42B1DB
RGB	rgb(66, 177, 219)
HSL	hsl(196, 68%, 56%)
HSV	hsv(196, 70%, 86%)
CMYK	cmyk(69.9%, 19.2%, 0%, 14.1%)
CIE-LAB	lab(67.81, -18.00, -30.28)
CIE-LCH	lch(67.81, 35.22, 239.27°)
OKLab	oklab(71.5% -0.0787 -0.0848)
OKLCH	oklch(71.5% 0.116 227.2)
XYZ	xyz(30.7499, 37.7135, 72.6629)
Luminance	0.3772 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B1DB #DB6C42

analogous

#42DBB9 #42B1DB #4264DB

triadic

#42B1DB #DB42B1 #B1DB42

tetradic

#42B1DB #B942DB #DB6C42 #64DB42

square

#42B1DB #B942DB #DB6C42 #64DB42

split-complementary

#42B1DB #DB4264 #DBB942

monochromatic

#1A6A89 #2492BC #42B1DB #75C6E5 #A9DBEF

Accessibility & contrast

On white

2.46

#42B1DB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.54

#42B1DB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B1DB

8.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B1DB	#FFFFFF	#000000	##000000
##42B1DB	1.00	2.46	8.54	8.54
#FFFFFF	2.46	1.00	21.00	21.00
#000000	8.54	21.00	1.00	1.00
##000000	8.54	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9BAEDD

Deuteranopia (green-blind)

#869FDA

Tritanopia (blue-blind)

#00BDBF

Achromatopsia (no color)

#A5A5A5

Design tokens & code

CSS

--color: #42b1db;
/* rgb */ color: rgb(66, 177, 219);
/* oklch */ color: oklch(71.5% 0.116 227.2);

Tailwind

colors: {
  custom: {
    50: '#89c8e6',
    500: '#42b1db',
    950: '#000000',
  },
}

SCSS

$custom: #42b1db;
$custom-light: #89c8e6;
$custom-dark: #000000;

JSON

{
  "hex": "#42b1db",
  "rgb": {
    "r": 66,
    "g": 177,
    "b": 219
  },
  "hsl": {
    "h": 196.471,
    "s": 68,
    "l": 55.882
  },
  "oklch": {
    "l": 0.71495,
    "c": 0.11568,
    "h": 227.2
  },
  "luminance": 0.37717
}

Semantic roles & 50–950 ramp

primary

#42B1DB

secondary

#DCAE9D

accent

#6D3DEB

background

#F9FCFE

surface

#F1F8FC

border

#CBD1D5

text

#0D1316

muted

#7E8284

Preview Lab

Preview with #42B1DB

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

Preview Lab → · Contrast checker → · Palette generator →