#3755CC#3755CC

#3755CC is a mid, vivid blue. Relative luminance 0.117; OKLCH L 50.0% C 0.187 H 268.1°. Best body text is #FFFFFF at 6.30:1 contrast (WCAG AA passes).

Color values

HEX	#3755CC
RGB	rgb(55, 85, 204)
HSL	hsl(228, 59%, 51%)
HSV	hsv(228, 73%, 80%)
CMYK	cmyk(73%, 58.3%, 0%, 20%)
CIE-LAB	lab(40.68, 30.13, -64.90)
CIE-LCH	lch(40.68, 71.55, 294.91°)
OKLab	oklab(50.01% -0.0064 -0.1873)
OKLCH	oklch(50.01% 0.187 268.1)
XYZ	xyz(15.7194, 11.6672, 58.5386)
Luminance	0.1167 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3755CC #CCAE37

analogous

#37A0CC #3755CC #6337CC

triadic

#3755CC #CC3755 #55CC37

tetradic

#3755CC #CC37A0 #CCAE37 #37CC63

square

#3755CC #CC37A0 #CCAE37 #37CC63

split-complementary

#3755CC #CC6337 #A0CC37

monochromatic

#1C2C6D #28409E #3755CC #687ED8 #99A8E5

Accessibility & contrast

On white

6.30

#3755CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.33

#3755CC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3755CC

6.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3755CC	#FFFFFF	#000000	##FFFFFF
##3755CC	1.00	6.30	3.33	6.30
#FFFFFF	6.30	1.00	21.00	1.00
#000000	3.33	21.00	1.00	21.00
##FFFFFF	6.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0067D0

Deuteranopia (green-blind)

#0059CA

Tritanopia (blue-blind)

#007388

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #3755cc;
/* rgb */ color: rgb(55, 85, 204);
/* oklch */ color: oklch(50.0% 0.187 268.1);

Tailwind

colors: {
  custom: {
    50: '#8284dc',
    500: '#3755cc',
    950: '#000000',
  },
}

SCSS

$custom: #3755cc;
$custom-light: #8284dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3755cc",
  "rgb": {
    "r": 55,
    "g": 85,
    "b": 204
  },
  "hsl": {
    "h": 227.919,
    "s": 59.363,
    "l": 50.784
  },
  "oklch": {
    "l": 0.50008,
    "c": 0.18738,
    "h": 268.1
  },
  "luminance": 0.11669
}

Semantic roles & 50–950 ramp

primary

#3755CC

secondary

#D0C38E

accent

#C345E3

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #3755CC

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

Preview Lab → · Contrast checker → · Palette generator →