#405CB3#405CB3

#405CB3 is a mid, vivid blue. Relative luminance 0.120; OKLCH L 50.0% C 0.142 H 267.6°. Best body text is #FFFFFF at 6.18:1 contrast (WCAG AA passes).

Color values

HEX	#405CB3
RGB	rgb(64, 92, 179)
HSL	hsl(225, 47%, 48%)
HSV	hsv(225, 64%, 70%)
CMYK	cmyk(64.2%, 48.6%, 0%, 29.8%)
CIE-LAB	lab(41.21, 17.93, -49.46)
CIE-LCH	lch(41.21, 52.61, 289.92°)
OKLab	oklab(49.97% -0.0058 -0.1416)
OKLCH	oklch(49.97% 0.142 267.6)
XYZ	xyz(14.0754, 11.9977, 44.2131)
Luminance	0.1200 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#405CB3 #B39740

analogous

#4096B3 #405CB3 #5D40B3

triadic

#405CB3 #B3405C #5CB340

tetradic

#405CB3 #B34096 #B39740 #40B35D

square

#405CB3 #B34096 #B39740 #40B35D

split-complementary

#405CB3 #B35D40 #96B340

monochromatic

#202E59 #304586 #405CB3 #677FC9 #94A5D9

Accessibility & contrast

On white

6.18

#405CB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.40

#405CB3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #405CB3

6.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##405CB3	#FFFFFF	#000000	##FFFFFF
##405CB3	1.00	6.18	3.40	6.18
#FFFFFF	6.18	1.00	21.00	1.00
#000000	3.40	21.00	1.00	21.00
##FFFFFF	6.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F67B6

Deuteranopia (green-blind)

#165CB1

Tritanopia (blue-blind)

#00707F

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #405cb3;
/* rgb */ color: rgb(64, 92, 179);
/* oklch */ color: oklch(50.0% 0.142 267.6);

Tailwind

colors: {
  custom: {
    50: '#8089ca',
    500: '#405cb3',
    950: '#000000',
  },
}

SCSS

$custom: #405cb3;
$custom-light: #8089ca;
$custom-dark: #000000;

JSON

{
  "hex": "#405cb3",
  "rgb": {
    "r": 64,
    "g": 92,
    "b": 179
  },
  "hsl": {
    "h": 225.391,
    "s": 47.325,
    "l": 47.647
  },
  "oklch": {
    "l": 0.49967,
    "c": 0.14169,
    "h": 267.6
  },
  "luminance": 0.11999
}

Semantic roles & 50–950 ramp

primary

#405CB3

secondary

#C4B68A

accent

#B651D7

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #405CB3

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

Preview Lab → · Contrast checker → · Palette generator →