#42A7D3#42A7D3

#42A7D3 is a light, moderate cyan. Relative luminance 0.335; OKLCH L 68.8% C 0.112 H 230.4°. Best body text is #000000 at 7.70:1 contrast (WCAG AA passes).

Color values

HEX	#42A7D3
RGB	rgb(66, 167, 211)
HSL	hsl(198, 62%, 54%)
HSV	hsv(198, 69%, 83%)
CMYK	cmyk(68.7%, 20.9%, 0%, 17.3%)
CIE-LAB	lab(64.56, -15.27, -30.89)
CIE-LCH	lch(64.56, 34.46, 243.69°)
OKLab	oklab(68.8% -0.0716 -0.0866)
OKLCH	oklch(68.8% 0.112 230.4)
XYZ	xyz(27.8187, 33.4958, 66.6146)
Luminance	0.3350 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42A7D3 #D36E42

analogous

#42D3B7 #42A7D3 #425FD3

triadic

#42A7D3 #D342A7 #A7D342

tetradic

#42A7D3 #B742D3 #D36E42 #5FD342

square

#42A7D3 #B742D3 #D36E42 #5FD342

split-complementary

#42A7D3 #D3425F #D3B742

monochromatic

#1D607D #2986AF #42A7D3 #74BEDF #A5D5EA

Accessibility & contrast

On white

2.73

#42A7D3 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.70

#42A7D3 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42A7D3

7.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42A7D3	#FFFFFF	#000000	##000000
##42A7D3	1.00	2.73	7.70	7.70
#FFFFFF	2.73	1.00	21.00	21.00
#000000	7.70	21.00	1.00	1.00
##000000	7.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#91A5D5

Deuteranopia (green-blind)

#7D96D2

Tritanopia (blue-blind)

#00B3B6

Achromatopsia (no color)

#9D9D9D

Design tokens & code

CSS

--color: #42a7d3;
/* rgb */ color: rgb(66, 167, 211);
/* oklch */ color: oklch(68.8% 0.112 230.4);

Tailwind

colors: {
  custom: {
    50: '#87c1e0',
    500: '#42a7d3',
    950: '#000000',
  },
}

SCSS

$custom: #42a7d3;
$custom-light: #87c1e0;
$custom-dark: #000000;

JSON

{
  "hex": "#42a7d3",
  "rgb": {
    "r": 66,
    "g": 167,
    "b": 211
  },
  "hsl": {
    "h": 198.207,
    "s": 62.232,
    "l": 54.314
  },
  "oklch": {
    "l": 0.68796,
    "c": 0.11239,
    "h": 230.4
  },
  "luminance": 0.33499
}

Semantic roles & 50–950 ramp

primary

#42A7D3

secondary

#D7AC9A

accent

#7442E5

background

#F8FBFD

surface

#F0F7FB

border

#CBD0D4

text

#0D1215

muted

#7D8183

Preview Lab

Preview with #42A7D3

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

Preview Lab → · Contrast checker → · Palette generator →