#3B73BB#3B73BB

#3B73BB is a mid, vivid cyan. Relative luminance 0.168; OKLCH L 55.3% C 0.127 H 255.7°. Best body text is #FFFFFF at 4.82:1 contrast (WCAG AA passes).

Color values

HEX	#3B73BB
RGB	rgb(59, 115, 187)
HSL	hsl(214, 52%, 48%)
HSV	hsv(214, 68%, 73%)
CMYK	cmyk(68.4%, 38.5%, 0%, 26.7%)
CIE-LAB	lab(47.98, 5.39, -43.32)
CIE-LCH	lch(47.98, 43.66, 277.10°)
OKLab	oklab(55.27% -0.0314 -0.1233)
OKLCH	oklch(55.27% 0.127 255.7)
XYZ	xyz(16.9007, 16.7774, 49.3517)
Luminance	0.1678 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B73BB #BB833B

analogous

#3BB3BB #3B73BB #433BBB

triadic

#3B73BB #BB3B73 #73BB3B

tetradic

#3B73BB #BB3BB3 #BB833B #3BBB43

square

#3B73BB #BB3BB3 #BB833B #3BBB43

split-complementary

#3B73BB #BB433B #B3BB3B

monochromatic

#1E3A5E #2C568C #3B73BB #6593CE #93B4DD

Accessibility & contrast

On white

4.82

#3B73BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.36

#3B73BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3B73BB

4.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B73BB	#FFFFFF	#000000	##FFFFFF
##3B73BB	1.00	4.82	4.36	4.82
#FFFFFF	4.82	1.00	21.00	1.00
#000000	4.36	21.00	1.00	21.00
##FFFFFF	4.82	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: #3b73bb;
/* rgb */ color: rgb(59, 115, 187);
/* oklch */ color: oklch(55.3% 0.127 255.7);

Tailwind

colors: {
  custom: {
    50: '#7f9ad0',
    500: '#3b73bb',
    950: '#000000',
  },
}

SCSS

$custom: #3b73bb;
$custom-light: #7f9ad0;
$custom-dark: #000000;

JSON

{
  "hex": "#3b73bb",
  "rgb": {
    "r": 59,
    "g": 115,
    "b": 187
  },
  "hsl": {
    "h": 213.75,
    "s": 52.033,
    "l": 48.235
  },
  "oklch": {
    "l": 0.55274,
    "c": 0.12725,
    "h": 255.7
  },
  "luminance": 0.16779
}

Semantic roles & 50–950 ramp

primary

#3B73BB

secondary

#C8AD8A

accent

#9D4CDB

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3B73BB

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

Preview Lab → · Contrast checker → · Palette generator →