#42A4D9#42A4D9

#42A4D9 is a light, moderate cyan. Relative luminance 0.327; OKLCH L 68.4% C 0.119 H 236.1°. Best body text is #000000 at 7.54:1 contrast (WCAG AA passes).

Color values

HEX	#42A4D9
RGB	rgb(66, 164, 217)
HSL	hsl(201, 67%, 55%)
HSV	hsv(201, 70%, 85%)
CMYK	cmyk(69.6%, 24.4%, 0%, 14.9%)
CIE-LAB	lab(63.93, -11.67, -35.19)
CIE-LCH	lch(63.93, 37.07, 251.65°)
OKLab	oklab(68.38% -0.0666 -0.099)
OKLCH	oklch(68.38% 0.119 236.1)
XYZ	xyz(28.0417, 32.7158, 70.4691)
Luminance	0.3272 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42A4D9 #D97742

analogous

#42D9C3 #42A4D9 #4258D9

triadic

#42A4D9 #D942A4 #A4D942

tetradic

#42A4D9 #C342D9 #D97742 #58D942

square

#42A4D9 #C342D9 #D97742 #58D942

split-complementary

#42A4D9 #D94258 #D9C342

monochromatic

#1B6086 #2585B9 #42A4D9 #75BDE3 #A8D5ED

Accessibility & contrast

On white

2.78

#42A4D9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.54

#42A4D9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42A4D9

7.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42A4D9	#FFFFFF	#000000	##000000
##42A4D9	1.00	2.78	7.54	7.54
#FFFFFF	2.78	1.00	21.00	21.00
#000000	7.54	21.00	1.00	1.00
##000000	7.54	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8BA3DB

Deuteranopia (green-blind)

#7694D8

Tritanopia (blue-blind)

#00B2B6

Achromatopsia (no color)

#9B9B9B

Design tokens & code

CSS

--color: #42a4d9;
/* rgb */ color: rgb(66, 164, 217);
/* oklch */ color: oklch(68.4% 0.119 236.1);

Tailwind

colors: {
  custom: {
    50: '#88bee5',
    500: '#42a4d9',
    950: '#000000',
  },
}

SCSS

$custom: #42a4d9;
$custom-light: #88bee5;
$custom-dark: #000000;

JSON

{
  "hex": "#42a4d9",
  "rgb": {
    "r": 66,
    "g": 164,
    "b": 217
  },
  "hsl": {
    "h": 201.06,
    "s": 66.52,
    "l": 55.49
  },
  "oklch": {
    "l": 0.68376,
    "c": 0.11931,
    "h": 236.1
  },
  "luminance": 0.32719
}

Semantic roles & 50–950 ramp

primary

#42A4D9

secondary

#DBB29C

accent

#7A3EE9

background

#F9FBFE

surface

#F1F6FC

border

#CBD0D5

text

#0D1215

muted

#7E8184

Preview Lab

Preview with #42A4D9

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

Preview Lab → · Contrast checker → · Palette generator →