#3B51CA#3B51CA

#3B51CA is a mid, vivid blue. Relative luminance 0.111; OKLCH L 49.3% C 0.188 H 270.1°. Best body text is #FFFFFF at 6.53:1 contrast (WCAG AA passes).

Color values

HEX	#3B51CA
RGB	rgb(59, 81, 202)
HSL	hsl(231, 57%, 51%)
HSV	hsv(231, 71%, 79%)
CMYK	cmyk(70.8%, 59.9%, 0%, 20.8%)
CIE-LAB	lab(39.71, 32.47, -65.32)
CIE-LCH	lch(39.71, 72.94, 296.43°)
OKLab	oklab(49.29% 0.0003 -0.1885)
OKLCH	oklch(49.29% 0.188 270.1)
XYZ	xyz(15.4031, 11.0774, 57.1921)
Luminance	0.1108 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B51CA #CAB43B

analogous

#3B98CA #3B51CA #6C3BCA

triadic

#3B51CA #CA3B51 #51CA3B

tetradic

#3B51CA #CA3B98 #CAB43B #3BCA6C

square

#3B51CA #CA3B98 #CAB43B #3BCA6C

split-complementary

#3B51CA #CA6C3B #98CA3B

monochromatic

#1E2A6D #2B3C9D #3B51CA #6B7CD7 #9BA7E4

Accessibility & contrast

On white

6.53

#3B51CA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.22

#3B51CA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3B51CA

6.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B51CA	#FFFFFF	#000000	##FFFFFF
##3B51CA	1.00	6.53	3.22	6.53
#FFFFFF	6.53	1.00	21.00	1.00
#000000	3.22	21.00	1.00	21.00
##FFFFFF	6.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0064CE

Deuteranopia (green-blind)

#0057C8

Tritanopia (blue-blind)

#006F86

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #3b51ca;
/* rgb */ color: rgb(59, 81, 202);
/* oklch */ color: oklch(49.3% 0.188 270.1);

Tailwind

colors: {
  custom: {
    50: '#8381db',
    500: '#3b51ca',
    950: '#000000',
  },
}

SCSS

$custom: #3b51ca;
$custom-light: #8381db;
$custom-dark: #000000;

JSON

{
  "hex": "#3b51ca",
  "rgb": {
    "r": 59,
    "g": 81,
    "b": 202
  },
  "hsl": {
    "h": 230.769,
    "s": 57.43,
    "l": 51.176
  },
  "oklch": {
    "l": 0.49289,
    "c": 0.18846,
    "h": 270.1
  },
  "luminance": 0.11079
}

Semantic roles & 50–950 ramp

primary

#3B51CA

secondary

#D0C691

accent

#C947E1

background

#F8F7FD

surface

#F0EEFB

border

#CBC9D4

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #3B51CA

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

Preview Lab → · Contrast checker → · Palette generator →