#3857BB#3857BB

#3857BB is a mid, vivid blue. Relative luminance 0.112; OKLCH L 49.1% C 0.162 H 267.2°. Best body text is #FFFFFF at 6.46:1 contrast (WCAG AA passes).

Color values

HEX	#3857BB
RGB	rgb(56, 87, 187)
HSL	hsl(226, 54%, 48%)
HSV	hsv(226, 70%, 73%)
CMYK	cmyk(70.1%, 53.5%, 0%, 26.7%)
CIE-LAB	lab(39.99, 22.77, -56.14)
CIE-LCH	lch(39.99, 60.58, 292.07°)
OKLab	oklab(49.1% -0.0079 -0.1615)
OKLCH	oklch(49.1% 0.162 267.2)
XYZ	xyz(14.0056, 11.2436, 48.4362)
Luminance	0.1124 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3857BB #BB9C38

analogous

#3898BB #3857BB #5B38BB

triadic

#3857BB #BB3857 #57BB38

tetradic

#3857BB #BB3898 #BB9C38 #38BB5B

square

#3857BB #BB3898 #BB9C38 #38BB5B

split-complementary

#3857BB #BB5B38 #98BB38

monochromatic

#1C2B5D #2A418C #3857BB #617BD0 #90A2DE

Accessibility & contrast

On white

6.46

#3857BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.25

#3857BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3857BB

6.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3857BB	#FFFFFF	#000000	##FFFFFF
##3857BB	1.00	6.46	3.25	6.46
#FFFFFF	6.46	1.00	21.00	1.00
#000000	3.25	21.00	1.00	21.00
##FFFFFF	6.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E64BF

Deuteranopia (green-blind)

#0058B9

Tritanopia (blue-blind)

#006F80

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #3857bb;
/* rgb */ color: rgb(56, 87, 187);
/* oklch */ color: oklch(49.1% 0.162 267.2);

Tailwind

colors: {
  custom: {
    50: '#7f85d0',
    500: '#3857bb',
    950: '#000000',
  },
}

SCSS

$custom: #3857bb;
$custom-light: #7f85d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3857bb",
  "rgb": {
    "r": 56,
    "g": 87,
    "b": 187
  },
  "hsl": {
    "h": 225.802,
    "s": 53.909,
    "l": 47.647
  },
  "oklch": {
    "l": 0.49101,
    "c": 0.16167,
    "h": 267.2
  },
  "luminance": 0.11245
}

Semantic roles & 50–950 ramp

primary

#3857BB

secondary

#C8B986

accent

#BB4BDD

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #3857BB

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

Preview Lab → · Contrast checker → · Palette generator →