#42B7DA#42B7DA

#42B7DA is a light, moderate cyan. Relative luminance 0.401; OKLCH L 72.9% C 0.114 H 221.7°. Best body text is #000000 at 9.02:1 contrast (WCAG AA passes).

Color values

HEX	#42B7DA
RGB	rgb(66, 183, 218)
HSL	hsl(194, 67%, 56%)
HSV	hsv(194, 70%, 85%)
CMYK	cmyk(69.7%, 16.1%, 0%, 14.5%)
CIE-LAB	lab(69.53, -21.44, -27.08)
CIE-LCH	lch(69.53, 34.54, 231.63°)
OKLab	oklab(72.86% -0.0849 -0.0756)
OKLCH	oklch(72.86% 0.114 221.7)
XYZ	xyz(31.8299, 40.0836, 72.3754)
Luminance	0.4009 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B7DA #DA6542

analogous

#42DAB1 #42B7DA #426BDA

triadic

#42B7DA #DA42B7 #B7DA42

tetradic

#42B7DA #B142DA #DA6542 #6BDA42

square

#42B7DA #B142DA #DA6542 #6BDA42

split-complementary

#42B7DA #DA426B #DAB142

monochromatic

#1A6E87 #2498BA #42B7DA #75CAE4 #A8DEEE

Accessibility & contrast

On white

2.33

#42B7DA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.02

#42B7DA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B7DA

9.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B7DA	#FFFFFF	#000000	##000000
##42B7DA	1.00	2.33	9.02	9.02
#FFFFFF	2.33	1.00	21.00	21.00
#000000	9.02	21.00	1.00	1.00
##000000	9.02	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A2B3DC

Deuteranopia (green-blind)

#8DA3DA

Tritanopia (blue-blind)

#00C2C2

Achromatopsia (no color)

#AAAAAA

Design tokens & code

CSS

--color: #42b7da;
/* rgb */ color: rgb(66, 183, 218);
/* oklch */ color: oklch(72.9% 0.114 221.7);

Tailwind

colors: {
  custom: {
    50: '#89cce5',
    500: '#42b7da',
    950: '#000000',
  },
}

SCSS

$custom: #42b7da;
$custom-light: #89cce5;
$custom-dark: #000000;

JSON

{
  "hex": "#42b7da",
  "rgb": {
    "r": 66,
    "g": 183,
    "b": 218
  },
  "hsl": {
    "h": 193.816,
    "s": 67.257,
    "l": 55.686
  },
  "oklch": {
    "l": 0.7286,
    "c": 0.11375,
    "h": 221.7
  },
  "luminance": 0.40087
}

Semantic roles & 50–950 ramp

primary

#42B7DA

secondary

#DBAB9C

accent

#653EEA

background

#F9FCFE

surface

#F1F9FC

border

#CBD2D5

text

#0D1315

muted

#7E8284

Preview Lab

Preview with #42B7DA

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

Preview Lab → · Contrast checker → · Palette generator →