#3857BC#3857BC

#3857BC is a mid, vivid blue. Relative luminance 0.113; OKLCH L 49.2% C 0.163 H 267.3°. Best body text is #FFFFFF at 6.45:1 contrast (WCAG AA passes).

Color values

HEX	#3857BC
RGB	rgb(56, 87, 188)
HSL	hsl(226, 54%, 48%)
HSV	hsv(226, 70%, 74%)
CMYK	cmyk(70.2%, 53.7%, 0%, 26.3%)
CIE-LAB	lab(40.06, 23.13, -56.61)
CIE-LCH	lch(40.06, 61.16, 292.23°)
OKLab	oklab(49.18% -0.0078 -0.1629)
OKLCH	oklch(49.18% 0.163 267.3)
XYZ	xyz(14.1130, 11.2866, 49.0020)
Luminance	0.1129 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3857BC #BC9D38

analogous

#3899BC #3857BC #5B38BC

triadic

#3857BC #BC3857 #57BC38

tetradic

#3857BC #BC3899 #BC9D38 #38BC5B

square

#3857BC #BC3899 #BC9D38 #38BC5B

split-complementary

#3857BC #BC5B38 #99BC38

monochromatic

#1C2B5E #2A418D #3857BC #617BD0 #90A3DE

Accessibility & contrast

On white

6.45

#3857BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.26

#3857BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3857BC

6.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3857BC	#FFFFFF	#000000	##FFFFFF
##3857BC	1.00	6.45	3.26	6.45
#FFFFFF	6.45	1.00	21.00	1.00
#000000	3.26	21.00	1.00	21.00
##FFFFFF	6.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0B65C0

Deuteranopia (green-blind)

#0059BA

Tritanopia (blue-blind)

#006F81

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #3857bc;
/* rgb */ color: rgb(56, 87, 188);
/* oklch */ color: oklch(49.2% 0.163 267.3);

Tailwind

colors: {
  custom: {
    50: '#7f85d1',
    500: '#3857bc',
    950: '#000000',
  },
}

SCSS

$custom: #3857bc;
$custom-light: #7f85d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3857bc",
  "rgb": {
    "r": 56,
    "g": 87,
    "b": 188
  },
  "hsl": {
    "h": 225.909,
    "s": 54.098,
    "l": 47.843
  },
  "oklch": {
    "l": 0.49178,
    "c": 0.16305,
    "h": 267.3
  },
  "luminance": 0.11288
}

Semantic roles & 50–950 ramp

primary

#3857BC

secondary

#C9B987

accent

#BB4ADD

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #3857BC

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

Preview Lab → · Contrast checker → · Palette generator →