#42B1D8#42B1D8

#42B1D8 is a light, moderate cyan. Relative luminance 0.376; OKLCH L 71.4% C 0.113 H 225.3°. Best body text is #000000 at 8.51:1 contrast (WCAG AA passes).

Color values

HEX	#42B1D8
RGB	rgb(66, 177, 216)
HSL	hsl(196, 66%, 55%)
HSV	hsv(196, 69%, 85%)
CMYK	cmyk(69.4%, 18.1%, 0%, 15.3%)
CIE-LAB	lab(67.69, -18.96, -28.81)
CIE-LCH	lch(67.69, 34.49, 236.65°)
OKLab	oklab(71.36% -0.0798 -0.0806)
OKLCH	oklch(71.36% 0.113 225.3)
XYZ	xyz(30.3585, 37.5570, 70.6017)
Luminance	0.3756 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B1D8 #D86942

analogous

#42D8B4 #42B1D8 #4266D8

triadic

#42B1D8 #D842B1 #B1D842

tetradic

#42B1D8 #B442D8 #D86942 #66D842

square

#42B1D8 #B442D8 #D86942 #66D842

split-complementary

#42B1D8 #D84266 #D8B442

monochromatic

#1B6984 #2691B7 #42B1D8 #75C6E2 #A7DBED

Accessibility & contrast

On white

2.47

#42B1D8 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.51

#42B1D8 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B1D8

8.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B1D8	#FFFFFF	#000000	##000000
##42B1D8	1.00	2.47	8.51	8.51
#FFFFFF	2.47	1.00	21.00	21.00
#000000	8.51	21.00	1.00	1.00
##000000	8.51	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9CADDA

Deuteranopia (green-blind)

#879ED8

Tritanopia (blue-blind)

#00BDBE

Achromatopsia (no color)

#A5A5A5

Design tokens & code

CSS

--color: #42b1d8;
/* rgb */ color: rgb(66, 177, 216);
/* oklch */ color: oklch(71.4% 0.113 225.3);

Tailwind

colors: {
  custom: {
    50: '#88c8e4',
    500: '#42b1d8',
    950: '#000000',
  },
}

SCSS

$custom: #42b1d8;
$custom-light: #88c8e4;
$custom-dark: #000000;

JSON

{
  "hex": "#42b1d8",
  "rgb": {
    "r": 66,
    "g": 177,
    "b": 216
  },
  "hsl": {
    "h": 195.6,
    "s": 65.789,
    "l": 55.294
  },
  "oklch": {
    "l": 0.71364,
    "c": 0.11341,
    "h": 225.3
  },
  "luminance": 0.3756
}

Semantic roles & 50–950 ramp

primary

#42B1D8

secondary

#DAAC9C

accent

#6B3FE9

background

#F9FCFD

surface

#F1F8FB

border

#CBD1D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #42B1D8

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

Preview Lab → · Contrast checker → · Palette generator →