#42A1D5#42A1D5

#42A1D5 is a light, moderate cyan. Relative luminance 0.315; OKLCH L 67.5% C 0.117 H 236.3°. Best body text is #000000 at 7.29:1 contrast (WCAG AA passes).

Color values

HEX	#42A1D5
RGB	rgb(66, 161, 213)
HSL	hsl(201, 64%, 55%)
HSV	hsv(201, 69%, 84%)
CMYK	cmyk(69%, 24.4%, 0%, 16.5%)
CIE-LAB	lab(62.88, -11.35, -34.60)
CIE-LCH	lch(62.88, 36.41, 251.84°)
OKLab	oklab(67.49% -0.065 -0.0973)
OKLCH	oklch(67.49% 0.117 236.3)
XYZ	xyz(26.9972, 31.4491, 67.5854)
Luminance	0.3145 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42A1D5 #D57642

analogous

#42D5BF #42A1D5 #4258D5

triadic

#42A1D5 #D542A1 #A1D542

tetradic

#42A1D5 #BF42D5 #D57642 #58D542

square

#42A1D5 #BF42D5 #D57642 #58D542

split-complementary

#42A1D5 #D54258 #D5BF42

monochromatic

#1C5D80 #2881B2 #42A1D5 #74BAE0 #A6D3EB

Accessibility & contrast

On white

2.88

#42A1D5 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.29

#42A1D5 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42A1D5

7.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42A1D5	#FFFFFF	#000000	##000000
##42A1D5	1.00	2.88	7.29	7.29
#FFFFFF	2.88	1.00	21.00	21.00
#000000	7.29	21.00	1.00	1.00
##000000	7.29	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#88A0D7

Deuteranopia (green-blind)

#7492D4

Tritanopia (blue-blind)

#00AEB3

Achromatopsia (no color)

#989898

Design tokens & code

CSS

--color: #42a1d5;
/* rgb */ color: rgb(66, 161, 213);
/* oklch */ color: oklch(67.5% 0.117 236.3);

Tailwind

colors: {
  custom: {
    50: '#87bce2',
    500: '#42a1d5',
    950: '#000000',
  },
}

SCSS

$custom: #42a1d5;
$custom-light: #87bce2;
$custom-dark: #000000;

JSON

{
  "hex": "#42a1d5",
  "rgb": {
    "r": 66,
    "g": 161,
    "b": 213
  },
  "hsl": {
    "h": 201.224,
    "s": 63.636,
    "l": 54.706
  },
  "oklch": {
    "l": 0.67489,
    "c": 0.11702,
    "h": 236.3
  },
  "luminance": 0.31452
}

Semantic roles & 50–950 ramp

primary

#42A1D5

secondary

#D8B09A

accent

#7C41E7

background

#F8FBFD

surface

#F0F6FB

border

#CBD0D4

text

#0D1215

muted

#7D8183

Preview Lab

Preview with #42A1D5

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

Preview Lab → · Contrast checker → · Palette generator →