#3B57CC#3B57CC

#3B57CC is a mid, vivid blue. Relative luminance 0.121; OKLCH L 50.6% C 0.184 H 268.7°. Best body text is #FFFFFF at 6.14:1 contrast (WCAG AA passes).

Color values

HEX	#3B57CC
RGB	rgb(59, 87, 204)
HSL	hsl(228, 59%, 52%)
HSV	hsv(228, 71%, 80%)
CMYK	cmyk(71.1%, 57.4%, 0%, 20%)
CIE-LAB	lab(41.38, 29.36, -63.75)
CIE-LCH	lch(41.38, 70.19, 294.73°)
OKLab	oklab(50.58% -0.0042 -0.1838)
OKLCH	oklch(50.58% 0.184 268.7)
XYZ	xyz(16.1072, 12.1042, 58.6025)
Luminance	0.1211 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B57CC #CCB03B

analogous

#3BA0CC #3B57CC #683BCC

triadic

#3B57CC #CC3B57 #57CC3B

tetradic

#3B57CC #CC3BA0 #CCB03B #3BCC68

square

#3B57CC #CC3BA0 #CCB03B #3BCC68

split-complementary

#3B57CC #CC683B #A0CC3B

monochromatic

#1D2D70 #2A41A0 #3B57CC #6C81D9 #9CAAE5

Accessibility & contrast

On white

6.14

#3B57CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.42

#3B57CC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3B57CC

6.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B57CC	#FFFFFF	#000000	##FFFFFF
##3B57CC	1.00	6.14	3.42	6.14
#FFFFFF	6.14	1.00	21.00	1.00
#000000	3.42	21.00	1.00	21.00
##FFFFFF	6.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0069D0

Deuteranopia (green-blind)

#005BCA

Tritanopia (blue-blind)

#007489

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #3b57cc;
/* rgb */ color: rgb(59, 87, 204);
/* oklch */ color: oklch(50.6% 0.184 268.7);

Tailwind

colors: {
  custom: {
    50: '#8386dc',
    500: '#3b57cc',
    950: '#000000',
  },
}

SCSS

$custom: #3b57cc;
$custom-light: #8386dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3b57cc",
  "rgb": {
    "r": 59,
    "g": 87,
    "b": 204
  },
  "hsl": {
    "h": 228.414,
    "s": 58.704,
    "l": 51.569
  },
  "oklch": {
    "l": 0.50582,
    "c": 0.18385,
    "h": 268.7
  },
  "luminance": 0.12106
}

Semantic roles & 50–950 ramp

primary

#3B57CC

secondary

#D1C592

accent

#C446E2

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3B57CC

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

Preview Lab → · Contrast checker → · Palette generator →