#3B51BE#3B51BE

#3B51BE is a mid, vivid blue. Relative luminance 0.105; OKLCH L 48.3% C 0.172 H 270.0°. Best body text is #FFFFFF at 6.76:1 contrast (WCAG AA passes).

Color values

HEX	#3B51BE
RGB	rgb(59, 81, 190)
HSL	hsl(230, 53%, 49%)
HSV	hsv(230, 69%, 75%)
CMYK	cmyk(68.9%, 57.4%, 0%, 25.5%)
CIE-LAB	lab(38.78, 28.18, -59.85)
CIE-LCH	lch(38.78, 66.15, 295.21°)
OKLab	oklab(48.3% 0.0001 -0.1724)
OKLCH	oklch(48.3% 0.172 270)
XYZ	xyz(14.0372, 10.5310, 49.9981)
Luminance	0.1053 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B51BE #BEA83B

analogous

#3B93BE #3B51BE #673BBE

triadic

#3B51BE #BE3B51 #51BE3B

tetradic

#3B51BE #BE3B93 #BEA83B #3BBE67

square

#3B51BE #BE3B93 #BEA83B #3BBE67

split-complementary

#3B51BE #BE673B #93BE3B

monochromatic

#1E2961 #2C3D8F #3B51BE #6778D0 #95A1DE

Accessibility & contrast

On white

6.76

#3B51BE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.11

#3B51BE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3B51BE

6.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B51BE	#FFFFFF	#000000	##FFFFFF
##3B51BE	1.00	6.76	3.11	6.76
#FFFFFF	6.76	1.00	21.00	1.00
#000000	3.11	21.00	1.00	21.00
##FFFFFF	6.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0061C2

Deuteranopia (green-blind)

#0056BC

Tritanopia (blue-blind)

#006C7F

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #3b51be;
/* rgb */ color: rgb(59, 81, 190);
/* oklch */ color: oklch(48.3% 0.172 270.0);

Tailwind

colors: {
  custom: {
    50: '#8181d2',
    500: '#3b51be',
    950: '#000000',
  },
}

SCSS

$custom: #3b51be;
$custom-light: #8181d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3b51be",
  "rgb": {
    "r": 59,
    "g": 81,
    "b": 190
  },
  "hsl": {
    "h": 229.924,
    "s": 52.61,
    "l": 48.824
  },
  "oklch": {
    "l": 0.48304,
    "c": 0.17241,
    "h": 270
  },
  "luminance": 0.10532
}

Semantic roles & 50–950 ramp

primary

#3B51BE

secondary

#CABF8B

accent

#C44CDC

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0A14

muted

#7D7C83

Preview Lab

Preview with #3B51BE

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

Preview Lab → · Contrast checker → · Palette generator →