#3A73BB#3A73BB

#3A73BB is a mid, vivid cyan. Relative luminance 0.167; OKLCH L 55.2% C 0.128 H 255.4°. Best body text is #FFFFFF at 4.83:1 contrast (WCAG AA passes).

Color values

HEX	#3A73BB
RGB	rgb(58, 115, 187)
HSL	hsl(213, 53%, 48%)
HSV	hsv(213, 69%, 73%)
CMYK	cmyk(69%, 38.5%, 0%, 26.7%)
CIE-LAB	lab(47.94, 5.24, -43.39)
CIE-LCH	lch(47.94, 43.70, 276.88°)
OKLab	oklab(55.23% -0.0321 -0.1235)
OKLCH	oklch(55.23% 0.128 255.4)
XYZ	xyz(16.8420, 16.7471, 49.3490)
Luminance	0.1675 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3A73BB #BB823A

analogous

#3AB3BB #3A73BB #413ABB

triadic

#3A73BB #BB3A73 #73BB3A

tetradic

#3A73BB #BB3AB3 #BB823A #3ABB41

square

#3A73BB #BB3AB3 #BB823A #3ABB41

split-complementary

#3A73BB #BB413A #B3BB3A

monochromatic

#1D3A5E #2C568C #3A73BB #6393CF #92B3DD

Accessibility & contrast

On white

4.83

#3A73BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.35

#3A73BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3A73BB

4.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3A73BB	#FFFFFF	#000000	##FFFFFF
##3A73BB	1.00	4.83	4.35	4.83
#FFFFFF	4.83	1.00	21.00	1.00
#000000	4.35	21.00	1.00	21.00
##FFFFFF	4.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5278BE

Deuteranopia (green-blind)

#3F6CBA

Tritanopia (blue-blind)

#00848E

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #3a73bb;
/* rgb */ color: rgb(58, 115, 187);
/* oklch */ color: oklch(55.2% 0.128 255.4);

Tailwind

colors: {
  custom: {
    50: '#7f9ad0',
    500: '#3a73bb',
    950: '#000000',
  },
}

SCSS

$custom: #3a73bb;
$custom-light: #7f9ad0;
$custom-dark: #000000;

JSON

{
  "hex": "#3a73bb",
  "rgb": {
    "r": 58,
    "g": 115,
    "b": 187
  },
  "hsl": {
    "h": 213.488,
    "s": 52.653,
    "l": 48.039
  },
  "oklch": {
    "l": 0.55233,
    "c": 0.12762,
    "h": 255.4
  },
  "luminance": 0.16749
}

Semantic roles & 50–950 ramp

primary

#3A73BB

secondary

#C8AC88

accent

#9C4CDC

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3A73BB

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

Preview Lab → · Contrast checker → · Palette generator →