#3858CB#3858CB

#3858CB is a mid, vivid blue. Relative luminance 0.121; OKLCH L 50.6% C 0.182 H 267.6°. Best body text is #FFFFFF at 6.13:1 contrast (WCAG AA passes).

Color values

HEX	#3858CB
RGB	rgb(56, 88, 203)
HSL	hsl(227, 59%, 51%)
HSV	hsv(227, 72%, 80%)
CMYK	cmyk(72.4%, 56.7%, 0%, 20.4%)
CIE-LAB	lab(41.42, 27.97, -63.11)
CIE-LCH	lch(41.42, 69.03, 293.90°)
OKLab	oklab(50.55% -0.0077 -0.182)
OKLCH	oklch(50.55% 0.182 267.6)
XYZ	xyz(15.8964, 12.1303, 57.9920)
Luminance	0.1213 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3858CB #CBAB38

analogous

#38A1CB #3858CB #6138CB

triadic

#3858CB #CB3858 #58CB38

tetradic

#3858CB #CB38A1 #CBAB38 #38CB61

square

#3858CB #CB38A1 #CBAB38 #38CB61

split-complementary

#3858CB #CB6138 #A1CB38

monochromatic

#1C2E6C #29429D #3858CB #6981D8 #99A9E4

Accessibility & contrast

On white

6.13

#3858CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.43

#3858CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3858CB

6.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3858CB	#FFFFFF	#000000	##FFFFFF
##3858CB	1.00	6.13	3.43	6.13
#FFFFFF	6.13	1.00	21.00	1.00
#000000	3.43	21.00	1.00	21.00
##FFFFFF	6.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0069CF

Deuteranopia (green-blind)

#005BC9

Tritanopia (blue-blind)

#007489

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #3858cb;
/* rgb */ color: rgb(56, 88, 203);
/* oklch */ color: oklch(50.6% 0.182 267.6);

Tailwind

colors: {
  custom: {
    50: '#8286dc',
    500: '#3858cb',
    950: '#000000',
  },
}

SCSS

$custom: #3858cb;
$custom-light: #8286dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3858cb",
  "rgb": {
    "r": 56,
    "g": 88,
    "b": 203
  },
  "hsl": {
    "h": 226.939,
    "s": 58.566,
    "l": 50.784
  },
  "oklch": {
    "l": 0.50551,
    "c": 0.18213,
    "h": 267.6
  },
  "luminance": 0.12132
}

Semantic roles & 50–950 ramp

primary

#3858CB

secondary

#D0C28F

accent

#C046E2

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3858CB

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

Preview Lab → · Contrast checker → · Palette generator →