#42B2DB#42B2DB

#42B2DB is a light, moderate cyan. Relative luminance 0.381; OKLCH L 71.7% C 0.115 H 226.4°. Best body text is #000000 at 8.62:1 contrast (WCAG AA passes).

Color values

HEX	#42B2DB
RGB	rgb(66, 178, 219)
HSL	hsl(196, 68%, 56%)
HSV	hsv(196, 70%, 86%)
CMYK	cmyk(69.9%, 18.7%, 0%, 14.1%)
CIE-LAB	lab(68.10, -18.52, -29.83)
CIE-LCH	lch(68.10, 35.11, 238.16°)
OKLab	oklab(71.73% -0.0796 -0.0835)
OKLCH	oklch(71.73% 0.115 226.4)
XYZ	xyz(30.9482, 38.1100, 72.7290)
Luminance	0.3811 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B2DB #DB6B42

analogous

#42DBB7 #42B2DB #4265DB

triadic

#42B2DB #DB42B2 #B2DB42

tetradic

#42B2DB #B742DB #DB6B42 #65DB42

square

#42B2DB #B742DB #DB6B42 #65DB42

split-complementary

#42B2DB #DB4265 #DBB742

monochromatic

#1A6B89 #2493BC #42B2DB #75C7E5 #A9DCEF

Accessibility & contrast

On white

2.44

#42B2DB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.62

#42B2DB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B2DB

8.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B2DB	#FFFFFF	#000000	##000000
##42B2DB	1.00	2.44	8.62	8.62
#FFFFFF	2.44	1.00	21.00	21.00
#000000	8.62	21.00	1.00	1.00
##000000	8.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9CAFDD

Deuteranopia (green-blind)

#879FDB

Tritanopia (blue-blind)

#00BEBF

Achromatopsia (no color)

#A6A6A6

Design tokens & code

CSS

--color: #42b2db;
/* rgb */ color: rgb(66, 178, 219);
/* oklch */ color: oklch(71.7% 0.115 226.4);

Tailwind

colors: {
  custom: {
    50: '#89c9e6',
    500: '#42b2db',
    950: '#000000',
  },
}

SCSS

$custom: #42b2db;
$custom-light: #89c9e6;
$custom-dark: #000000;

JSON

{
  "hex": "#42b2db",
  "rgb": {
    "r": 66,
    "g": 178,
    "b": 219
  },
  "hsl": {
    "h": 196.078,
    "s": 68,
    "l": 55.882
  },
  "oklch": {
    "l": 0.71729,
    "c": 0.1154,
    "h": 226.4
  },
  "luminance": 0.38114
}

Semantic roles & 50–950 ramp

primary

#42B2DB

secondary

#DCAE9D

accent

#6C3DEB

background

#F9FCFE

surface

#F1F8FC

border

#CBD1D5

text

#0D1316

muted

#7E8284

Preview Lab

Preview with #42B2DB

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

Preview Lab → · Contrast checker → · Palette generator →