#3858BB#3858BB

#3858BB is a mid, vivid blue. Relative luminance 0.114; OKLCH L 49.3% C 0.160 H 266.9°. Best body text is #FFFFFF at 6.40:1 contrast (WCAG AA passes).

Color values

HEX	#3858BB
RGB	rgb(56, 88, 187)
HSL	hsl(225, 54%, 48%)
HSV	hsv(225, 70%, 73%)
CMYK	cmyk(70.1%, 52.9%, 0%, 26.7%)
CIE-LAB	lab(40.26, 22.12, -55.71)
CIE-LCH	lch(40.26, 59.94, 291.65°)
OKLab	oklab(49.31% -0.0087 -0.1602)
OKLCH	oklch(49.31% 0.16 266.9)
XYZ	xyz(14.0871, 11.4066, 48.4634)
Luminance	0.1141 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3858BB #BB9B38

analogous

#3899BB #3858BB #5A38BB

triadic

#3858BB #BB3858 #58BB38

tetradic

#3858BB #BB3899 #BB9B38 #38BB5A

square

#3858BB #BB3899 #BB9B38 #38BB5A

split-complementary

#3858BB #BB5A38 #99BB38

monochromatic

#1C2C5D #2A428C #3858BB #617CD0 #90A3DE

Accessibility & contrast

On white

6.40

#3858BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.28

#3858BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3858BB

6.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3858BB	#FFFFFF	#000000	##FFFFFF
##3858BB	1.00	6.40	3.28	6.40
#FFFFFF	6.40	1.00	21.00	1.00
#000000	3.28	21.00	1.00	21.00
##FFFFFF	6.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1465BE

Deuteranopia (green-blind)

#0059B9

Tritanopia (blue-blind)

#007081

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3858bb;
/* rgb */ color: rgb(56, 88, 187);
/* oklch */ color: oklch(49.3% 0.160 266.9);

Tailwind

colors: {
  custom: {
    50: '#7f86d0',
    500: '#3858bb',
    950: '#000000',
  },
}

SCSS

$custom: #3858bb;
$custom-light: #7f86d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3858bb",
  "rgb": {
    "r": 56,
    "g": 88,
    "b": 187
  },
  "hsl": {
    "h": 225.344,
    "s": 53.909,
    "l": 47.647
  },
  "oklch": {
    "l": 0.49305,
    "c": 0.16042,
    "h": 266.9
  },
  "luminance": 0.11408
}

Semantic roles & 50–950 ramp

primary

#3858BB

secondary

#C8B886

accent

#B94BDD

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #3858BB

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

Preview Lab → · Contrast checker → · Palette generator →