#42A5D9#42A5D9

#42A5D9 is a light, moderate cyan. Relative luminance 0.331; OKLCH L 68.6% C 0.119 H 235.3°. Best body text is #000000 at 7.62:1 contrast (WCAG AA passes).

Color values

HEX	#42A5D9
RGB	rgb(66, 165, 217)
HSL	hsl(201, 67%, 55%)
HSV	hsv(201, 70%, 85%)
CMYK	cmyk(69.6%, 24%, 0%, 14.9%)
CIE-LAB	lab(64.22, -12.22, -34.73)
CIE-LCH	lch(64.22, 36.82, 250.62°)
OKLab	oklab(68.61% -0.0676 -0.0977)
OKLCH	oklch(68.61% 0.119 235.3)
XYZ	xyz(28.2214, 33.0751, 70.5290)
Luminance	0.3308 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42A5D9 #D97642

analogous

#42D9C1 #42A5D9 #4259D9

triadic

#42A5D9 #D942A5 #A5D942

tetradic

#42A5D9 #C142D9 #D97642 #59D942

square

#42A5D9 #C142D9 #D97642 #59D942

split-complementary

#42A5D9 #D94259 #D9C142

monochromatic

#1B6186 #2586B9 #42A5D9 #75BDE3 #A8D6ED

Accessibility & contrast

On white

2.76

#42A5D9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.62

#42A5D9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42A5D9

7.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42A5D9	#FFFFFF	#000000	##000000
##42A5D9	1.00	2.76	7.62	7.62
#FFFFFF	2.76	1.00	21.00	21.00
#000000	7.62	21.00	1.00	1.00
##000000	7.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8CA4DB

Deuteranopia (green-blind)

#7795D8

Tritanopia (blue-blind)

#00B3B7

Achromatopsia (no color)

#9C9C9C

Design tokens & code

CSS

--color: #42a5d9;
/* rgb */ color: rgb(66, 165, 217);
/* oklch */ color: oklch(68.6% 0.119 235.3);

Tailwind

colors: {
  custom: {
    50: '#88bfe5',
    500: '#42a5d9',
    950: '#000000',
  },
}

SCSS

$custom: #42a5d9;
$custom-light: #88bfe5;
$custom-dark: #000000;

JSON

{
  "hex": "#42a5d9",
  "rgb": {
    "r": 66,
    "g": 165,
    "b": 217
  },
  "hsl": {
    "h": 200.662,
    "s": 66.52,
    "l": 55.49
  },
  "oklch": {
    "l": 0.68608,
    "c": 0.11878,
    "h": 235.3
  },
  "luminance": 0.33078
}

Semantic roles & 50–950 ramp

primary

#42A5D9

secondary

#DBB29C

accent

#793EE9

background

#F9FBFE

surface

#F1F7FC

border

#CBD0D5

text

#0D1215

muted

#7E8184

Preview Lab

Preview with #42A5D9

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

Preview Lab → · Contrast checker → · Palette generator →