#3B51CC#3B51CC

#3B51CC is a mid, vivid blue. Relative luminance 0.112; OKLCH L 49.5% C 0.191 H 270.1°. Best body text is #FFFFFF at 6.49:1 contrast (WCAG AA passes).

Color values

HEX	#3B51CC
RGB	rgb(59, 81, 204)
HSL	hsl(231, 59%, 52%)
HSV	hsv(231, 71%, 80%)
CMYK	cmyk(71.1%, 60.3%, 0%, 20%)
CIE-LAB	lab(39.87, 33.18, -66.21)
CIE-LCH	lch(39.87, 74.06, 296.62°)
OKLab	oklab(49.46% 0.0003 -0.1911)
OKLCH	oklch(49.46% 0.191 270.1)
XYZ	xyz(15.6414, 11.1727, 58.4473)
Luminance	0.1117 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B51CC #CCB63B

analogous

#3B99CC #3B51CC #6E3BCC

triadic

#3B51CC #CC3B51 #51CC3B

tetradic

#3B51CC #CC3B99 #CCB63B #3BCC6E

square

#3B51CC #CC3B99 #CCB63B #3BCC6E

split-complementary

#3B51CC #CC6E3B #99CC3B

monochromatic

#1D2A70 #2A3CA0 #3B51CC #6C7CD9 #9CA7E5

Accessibility & contrast

On white

6.49

#3B51CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.23

#3B51CC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3B51CC

6.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B51CC	#FFFFFF	#000000	##FFFFFF
##3B51CC	1.00	6.49	3.23	6.49
#FFFFFF	6.49	1.00	21.00	1.00
#000000	3.23	21.00	1.00	21.00
##FFFFFF	6.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0065D0

Deuteranopia (green-blind)

#0057CA

Tritanopia (blue-blind)

#007087

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #3b51cc;
/* rgb */ color: rgb(59, 81, 204);
/* oklch */ color: oklch(49.5% 0.191 270.1);

Tailwind

colors: {
  custom: {
    50: '#8481dc',
    500: '#3b51cc',
    950: '#000000',
  },
}

SCSS

$custom: #3b51cc;
$custom-light: #8481dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3b51cc",
  "rgb": {
    "r": 59,
    "g": 81,
    "b": 204
  },
  "hsl": {
    "h": 230.897,
    "s": 58.704,
    "l": 51.569
  },
  "oklch": {
    "l": 0.49457,
    "c": 0.1911,
    "h": 270.1
  },
  "luminance": 0.11174
}

Semantic roles & 50–950 ramp

primary

#3B51CC

secondary

#D1C892

accent

#CA46E2

background

#F8F7FD

surface

#F0EEFB

border

#CBC9D4

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #3B51CC

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

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