#405CB1#405CB1

#405CB1 is a mid, vivid blue. Relative luminance 0.119; OKLCH L 49.8% C 0.139 H 267.5°. Best body text is #FFFFFF at 6.21:1 contrast (WCAG AA passes).

Color values

HEX	#405CB1
RGB	rgb(64, 92, 177)
HSL	hsl(225, 47%, 47%)
HSV	hsv(225, 64%, 69%)
CMYK	cmyk(63.8%, 48%, 0%, 30.6%)
CIE-LAB	lab(41.08, 17.21, -48.49)
CIE-LCH	lch(41.08, 51.45, 289.54°)
OKLab	oklab(49.83% -0.0061 -0.1387)
OKLCH	oklch(49.83% 0.139 267.5)
XYZ	xyz(13.8746, 11.9174, 43.1556)
Luminance	0.1192 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#405CB1 #B19540

analogous

#4094B1 #405CB1 #5D40B1

triadic

#405CB1 #B1405C #5CB140

tetradic

#405CB1 #B14094 #B19540 #40B15D

square

#405CB1 #B14094 #B19540 #40B15D

split-complementary

#405CB1 #B15D40 #94B140

monochromatic

#1F2D57 #304584 #405CB1 #667FC8 #93A4D8

Accessibility & contrast

On white

6.21

#405CB1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.38

#405CB1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #405CB1

6.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##405CB1	#FFFFFF	#000000	##FFFFFF
##405CB1	1.00	6.21	3.38	6.21
#FFFFFF	6.21	1.00	21.00	1.00
#000000	3.38	21.00	1.00	21.00
##FFFFFF	6.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3166B4

Deuteranopia (green-blind)

#1B5CAF

Tritanopia (blue-blind)

#00707E

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #405cb1;
/* rgb */ color: rgb(64, 92, 177);
/* oklch */ color: oklch(49.8% 0.139 267.5);

Tailwind

colors: {
  custom: {
    50: '#8089c9',
    500: '#405cb1',
    950: '#000000',
  },
}

SCSS

$custom: #405cb1;
$custom-light: #8089c9;
$custom-dark: #000000;

JSON

{
  "hex": "#405cb1",
  "rgb": {
    "r": 64,
    "g": 92,
    "b": 177
  },
  "hsl": {
    "h": 225.133,
    "s": 46.888,
    "l": 47.255
  },
  "oklch": {
    "l": 0.49829,
    "c": 0.13885,
    "h": 267.5
  },
  "luminance": 0.11919
}

Semantic roles & 50–950 ramp

primary

#405CB1

secondary

#C3B589

accent

#B651D7

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #405CB1

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

Preview Lab → · Contrast checker → · Palette generator →