#3851CB#3851CB

#3851CB is a mid, vivid blue. Relative luminance 0.110; OKLCH L 49.2% C 0.191 H 269.2°. Best body text is #FFFFFF at 6.55:1 contrast (WCAG AA passes).

Color values

HEX	#3851CB
RGB	rgb(56, 81, 203)
HSL	hsl(230, 59%, 51%)
HSV	hsv(230, 72%, 80%)
CMYK	cmyk(72.4%, 60.1%, 0%, 20.4%)
CIE-LAB	lab(39.64, 32.45, -66.02)
CIE-LCH	lch(39.64, 73.56, 296.18°)
OKLab	oklab(49.22% -0.0026 -0.1906)
OKLCH	oklch(49.22% 0.191 269.2)
XYZ	xyz(15.3491, 11.0358, 57.8095)
Luminance	0.1104 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3851CB #CBB238

analogous

#389ACB #3851CB #6838CB

triadic

#3851CB #CB3851 #51CB38

tetradic

#3851CB #CB389A #CBB238 #38CB68

square

#3851CB #CB389A #CBB238 #38CB68

split-complementary

#3851CB #CB6838 #9ACB38

monochromatic

#1C2A6C #293D9D #3851CB #697BD8 #99A6E4

Accessibility & contrast

On white

6.55

#3851CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.21

#3851CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3851CB

6.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3851CB	#FFFFFF	#000000	##FFFFFF
##3851CB	1.00	6.55	3.21	6.55
#FFFFFF	6.55	1.00	21.00	1.00
#000000	3.21	21.00	1.00	21.00
##FFFFFF	6.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0064CF

Deuteranopia (green-blind)

#0057C9

Tritanopia (blue-blind)

#007086

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #3851cb;
/* rgb */ color: rgb(56, 81, 203);
/* oklch */ color: oklch(49.2% 0.191 269.2);

Tailwind

colors: {
  custom: {
    50: '#8281dc',
    500: '#3851cb',
    950: '#000000',
  },
}

SCSS

$custom: #3851cb;
$custom-light: #8281dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3851cb",
  "rgb": {
    "r": 56,
    "g": 81,
    "b": 203
  },
  "hsl": {
    "h": 229.796,
    "s": 58.566,
    "l": 50.784
  },
  "oklch": {
    "l": 0.49221,
    "c": 0.1906,
    "h": 269.2
  },
  "luminance": 0.11037
}

Semantic roles & 50–950 ramp

primary

#3851CB

secondary

#D0C58F

accent

#C746E2

background

#F8F7FD

surface

#F0EEFB

border

#CBC9D4

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #3851CB

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

Preview Lab → · Contrast checker → · Palette generator →