#42B4D7#42B4D7

#42B4D7 is a light, moderate cyan. Relative luminance 0.387; OKLCH L 72.0% C 0.112 H 222.2°. Best body text is #000000 at 8.74:1 contrast (WCAG AA passes).

Color values

HEX	#42B4D7
RGB	rgb(66, 180, 215)
HSL	hsl(194, 65%, 55%)
HSV	hsv(194, 69%, 84%)
CMYK	cmyk(69.3%, 16.3%, 0%, 15.7%)
CIE-LAB	lab(68.54, -20.84, -26.96)
CIE-LCH	lch(68.54, 34.08, 232.30°)
OKLab	oklab(72.03% -0.0831 -0.0753)
OKLCH	oklch(72.03% 0.112 222.2)
XYZ	xyz(30.8287, 38.7036, 70.1226)
Luminance	0.3871 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B4D7 #D76542

analogous

#42D7B0 #42B4D7 #4269D7

triadic

#42B4D7 #D742B4 #B4D742

tetradic

#42B4D7 #B042D7 #D76542 #69D742

square

#42B4D7 #B042D7 #D76542 #69D742

split-complementary

#42B4D7 #D74269 #D7B042

monochromatic

#1C6B83 #2694B5 #42B4D7 #75C8E2 #A7DCEC

Accessibility & contrast

On white

2.40

#42B4D7 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.74

#42B4D7 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B4D7

8.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B4D7	#FFFFFF	#000000	##000000
##42B4D7	1.00	2.40	8.74	8.74
#FFFFFF	2.40	1.00	21.00	21.00
#000000	8.74	21.00	1.00	1.00
##000000	8.74	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A0B0D9

Deuteranopia (green-blind)

#8BA1D7

Tritanopia (blue-blind)

#00BFBF

Achromatopsia (no color)

#A7A7A7

Design tokens & code

CSS

--color: #42b4d7;
/* rgb */ color: rgb(66, 180, 215);
/* oklch */ color: oklch(72.0% 0.112 222.2);

Tailwind

colors: {
  custom: {
    50: '#88cae3',
    500: '#42b4d7',
    950: '#000000',
  },
}

SCSS

$custom: #42b4d7;
$custom-light: #88cae3;
$custom-dark: #000000;

JSON

{
  "hex": "#42b4d7",
  "rgb": {
    "r": 66,
    "g": 180,
    "b": 215
  },
  "hsl": {
    "h": 194.094,
    "s": 65.066,
    "l": 55.098
  },
  "oklch": {
    "l": 0.72027,
    "c": 0.11217,
    "h": 222.2
  },
  "luminance": 0.38707
}

Semantic roles & 50–950 ramp

primary

#42B4D7

secondary

#DAAA9B

accent

#6740E8

background

#F9FCFD

surface

#F1F8FB

border

#CBD1D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #42B4D7

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

Preview Lab → · Contrast checker → · Palette generator →