#3C57BB#3C57BB

#3C57BB is a mid, vivid blue. Relative luminance 0.114; OKLCH L 49.3% C 0.160 H 268.5°. Best body text is #FFFFFF at 6.42:1 contrast (WCAG AA passes).

Color values

HEX	#3C57BB
RGB	rgb(60, 87, 187)
HSL	hsl(227, 51%, 48%)
HSV	hsv(227, 68%, 73%)
CMYK	cmyk(67.9%, 53.5%, 0%, 26.7%)
CIE-LAB	lab(40.19, 23.37, -55.81)
CIE-LCH	lch(40.19, 60.51, 292.72°)
OKLab	oklab(49.31% -0.0041 -0.1604)
OKLCH	oklch(49.31% 0.16 268.5)
XYZ	xyz(14.2382, 11.3635, 48.4471)
Luminance	0.1137 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3C57BB #BBA03C

analogous

#3C96BB #3C57BB #603CBB

triadic

#3C57BB #BB3C57 #57BB3C

tetradic

#3C57BB #BB3C96 #BBA03C #3CBB60

square

#3C57BB #BB3C96 #BBA03C #3CBB60

split-complementary

#3C57BB #BB603C #96BB3C

monochromatic

#1E2C5E #2D418D #3C57BB #667CCE #95A4DD

Accessibility & contrast

On white

6.42

#3C57BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.27

#3C57BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3C57BB

6.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3C57BB	#FFFFFF	#000000	##FFFFFF
##3C57BB	1.00	6.42	3.27	6.42
#FFFFFF	6.42	1.00	21.00	1.00
#000000	3.27	21.00	1.00	21.00
##FFFFFF	6.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1165BF

Deuteranopia (green-blind)

#0059B9

Tritanopia (blue-blind)

#006F80

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3c57bb;
/* rgb */ color: rgb(60, 87, 187);
/* oklch */ color: oklch(49.3% 0.160 268.5);

Tailwind

colors: {
  custom: {
    50: '#8086d0',
    500: '#3c57bb',
    950: '#000000',
  },
}

SCSS

$custom: #3c57bb;
$custom-light: #8086d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3c57bb",
  "rgb": {
    "r": 60,
    "g": 87,
    "b": 187
  },
  "hsl": {
    "h": 227.244,
    "s": 51.417,
    "l": 48.431
  },
  "oklch": {
    "l": 0.49305,
    "c": 0.16048,
    "h": 268.5
  },
  "luminance": 0.11365
}

Semantic roles & 50–950 ramp

primary

#3C57BB

secondary

#C8BB8B

accent

#BD4DDB

background

#F8F8FC

surface

#F0EFF9

border

#CBCAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #3C57BB

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

Preview Lab → · Contrast checker → · Palette generator →