#3B57BC#3B57BC

#3B57BC is a mid, vivid blue. Relative luminance 0.114; OKLCH L 49.3% C 0.162 H 268.2°. Best body text is #FFFFFF at 6.41:1 contrast (WCAG AA passes).

Color values

HEX	#3B57BC
RGB	rgb(59, 87, 188)
HSL	hsl(227, 52%, 48%)
HSV	hsv(227, 69%, 74%)
CMYK	cmyk(68.6%, 53.7%, 0%, 26.3%)
CIE-LAB	lab(40.21, 23.58, -56.37)
CIE-LCH	lch(40.21, 61.10, 292.70°)
OKLab	oklab(49.33% -0.005 -0.1621)
OKLCH	oklch(49.33% 0.162 268.2)
XYZ	xyz(14.2858, 11.3756, 49.0101)
Luminance	0.1138 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B57BC #BCA03B

analogous

#3B97BC #3B57BC #5F3BBC

triadic

#3B57BC #BC3B57 #57BC3B

tetradic

#3B57BC #BC3B97 #BCA03B #3BBC5F

square

#3B57BC #BC3B97 #BCA03B #3BBC5F

split-complementary

#3B57BC #BC5F3B #97BC3B

monochromatic

#1E2C5F #2C418D #3B57BC #657CCF #94A4DD

Accessibility & contrast

On white

6.41

#3B57BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.28

#3B57BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3B57BC

6.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B57BC	#FFFFFF	#000000	##FFFFFF
##3B57BC	1.00	6.41	3.28	6.41
#FFFFFF	6.41	1.00	21.00	1.00
#000000	3.28	21.00	1.00	21.00
##FFFFFF	6.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D65C0

Deuteranopia (green-blind)

#0059BA

Tritanopia (blue-blind)

#006F81

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3b57bc;
/* rgb */ color: rgb(59, 87, 188);
/* oklch */ color: oklch(49.3% 0.162 268.2);

Tailwind

colors: {
  custom: {
    50: '#8086d1',
    500: '#3b57bc',
    950: '#000000',
  },
}

SCSS

$custom: #3b57bc;
$custom-light: #8086d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3b57bc",
  "rgb": {
    "r": 59,
    "g": 87,
    "b": 188
  },
  "hsl": {
    "h": 226.977,
    "s": 52.227,
    "l": 48.431
  },
  "oklch": {
    "l": 0.49329,
    "c": 0.16216,
    "h": 268.2
  },
  "luminance": 0.11377
}

Semantic roles & 50–950 ramp

primary

#3B57BC

secondary

#C9BB8A

accent

#BD4CDC

background

#F8F8FC

surface

#F0EFF9

border

#CBCAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #3B57BC

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

Preview Lab → · Contrast checker → · Palette generator →