#3857B7#3857B7

#3857B7 is a mid, vivid blue. Relative luminance 0.111; OKLCH L 48.8% C 0.156 H 267.0°. Best body text is #FFFFFF at 6.53:1 contrast (WCAG AA passes).

Color values

HEX	#3857B7
RGB	rgb(56, 87, 183)
HSL	hsl(225, 53%, 47%)
HSV	hsv(225, 69%, 72%)
CMYK	cmyk(69.4%, 52.5%, 0%, 28.2%)
CIE-LAB	lab(39.71, 21.30, -54.26)
CIE-LCH	lch(39.71, 58.29, 291.43°)
OKLab	oklab(48.8% -0.0082 -0.1559)
OKLCH	oklch(48.8% 0.156 267)
XYZ	xyz(13.5834, 11.0747, 46.2123)
Luminance	0.1108 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3857B7 #B79838

analogous

#3897B7 #3857B7 #5838B7

triadic

#3857B7 #B73857 #57B738

tetradic

#3857B7 #B73897 #B79838 #38B758

square

#3857B7 #B73897 #B79838 #38B758

split-complementary

#3857B7 #B75838 #97B738

monochromatic

#1B2A59 #2A4188 #3857B7 #5E7ACE #8DA0DC

Accessibility & contrast

On white

6.53

#3857B7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.22

#3857B7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3857B7

6.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3857B7	#FFFFFF	#000000	##FFFFFF
##3857B7	1.00	6.53	3.22	6.53
#FFFFFF	6.53	1.00	21.00	1.00
#000000	3.22	21.00	1.00	21.00
##FFFFFF	6.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1864BA

Deuteranopia (green-blind)

#0058B5

Tritanopia (blue-blind)

#006E7E

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #3857b7;
/* rgb */ color: rgb(56, 87, 183);
/* oklch */ color: oklch(48.8% 0.156 267.0);

Tailwind

colors: {
  custom: {
    50: '#7e85cd',
    500: '#3857b7',
    950: '#000000',
  },
}

SCSS

$custom: #3857b7;
$custom-light: #7e85cd;
$custom-dark: #000000;

JSON

{
  "hex": "#3857b7",
  "rgb": {
    "r": 56,
    "g": 87,
    "b": 183
  },
  "hsl": {
    "h": 225.354,
    "s": 53.138,
    "l": 46.863
  },
  "oklch": {
    "l": 0.48799,
    "c": 0.15615,
    "h": 267
  },
  "luminance": 0.11076
}

Semantic roles & 50–950 ramp

primary

#3857B7

secondary

#C7B684

accent

#B94BDD

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #3857B7

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

Preview Lab → · Contrast checker → · Palette generator →