#3B5BD1#3B5BD1

#3B5BD1 is a mid, vivid blue. Relative luminance 0.130; OKLCH L 51.7% C 0.186 H 267.8°. Best body text is #FFFFFF at 5.83:1 contrast (WCAG AA passes).

Color values

HEX	#3B5BD1
RGB	rgb(59, 91, 209)
HSL	hsl(227, 62%, 53%)
HSV	hsv(227, 72%, 82%)
CMYK	cmyk(71.8%, 56.5%, 0%, 18%)
CIE-LAB	lab(42.78, 28.61, -64.35)
CIE-LCH	lch(42.78, 70.42, 293.97°)
OKLab	oklab(51.75% -0.0071 -0.1855)
OKLCH	oklch(51.75% 0.186 267.8)
XYZ	xyz(17.0494, 13.0137, 61.9226)
Luminance	0.1301 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B5BD1 #D1B13B

analogous

#3BA6D1 #3B5BD1 #663BD1

triadic

#3B5BD1 #D13B5B #5BD13B

tetradic

#3B5BD1 #D13BA6 #D1B13B #3BD166

square

#3B5BD1 #D13BA6 #D1B13B #3BD166

split-complementary

#3B5BD1 #D1663B #A6D13B

monochromatic

#1C2F76 #2743A7 #3B5BD1 #6D84DD #9EAEE8

Accessibility & contrast

On white

5.83

#3B5BD1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.60

#3B5BD1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3B5BD1

5.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B5BD1	#FFFFFF	#000000	##FFFFFF
##3B5BD1	1.00	5.83	3.60	5.83
#FFFFFF	5.83	1.00	21.00	1.00
#000000	3.60	21.00	1.00	21.00
##FFFFFF	5.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006CD5

Deuteranopia (green-blind)

#005ECF

Tritanopia (blue-blind)

#00788D

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #3b5bd1;
/* rgb */ color: rgb(59, 91, 209);
/* oklch */ color: oklch(51.7% 0.186 267.8);

Tailwind

colors: {
  custom: {
    50: '#8489e0',
    500: '#3b5bd1',
    950: '#000000',
  },
}

SCSS

$custom: #3b5bd1;
$custom-light: #8489e0;
$custom-dark: #000000;

JSON

{
  "hex": "#3b5bd1",
  "rgb": {
    "r": 59,
    "g": 91,
    "b": 209
  },
  "hsl": {
    "h": 227.2,
    "s": 61.983,
    "l": 52.549
  },
  "oklch": {
    "l": 0.5175,
    "c": 0.18564,
    "h": 267.8
  },
  "luminance": 0.13015
}

Semantic roles & 50–950 ramp

primary

#3B5BD1

secondary

#D4C793

accent

#C243E5

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3B5BD1

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

Preview Lab → · Contrast checker → · Palette generator →