#405CBB#405CBB

#405CBB is a mid, vivid blue. Relative luminance 0.123; OKLCH L 50.5% C 0.153 H 268.2°. Best body text is #FFFFFF at 6.06:1 contrast (WCAG AA passes).

Color values

HEX	#405CBB
RGB	rgb(64, 92, 187)
HSL	hsl(226, 49%, 49%)
HSV	hsv(226, 66%, 73%)
CMYK	cmyk(65.8%, 50.8%, 0%, 26.7%)
CIE-LAB	lab(41.74, 20.78, -53.30)
CIE-LCH	lch(41.74, 57.21, 291.30°)
OKLab	oklab(50.53% -0.0049 -0.1529)
OKLCH	oklch(50.53% 0.153 268.2)
XYZ	xyz(14.9081, 12.3308, 48.5985)
Luminance	0.1233 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#405CBB #BB9F40

analogous

#409ABB #405CBB #6140BB

triadic

#405CBB #BB405C #5CBB40

tetradic

#405CBB #BB409A #BB9F40 #40BB61

square

#405CBB #BB409A #BB9F40 #40BB61

split-complementary

#405CBB #BB6140 #9ABB40

monochromatic

#212F60 #30468D #405CBB #6C82CD #99A8DC

Accessibility & contrast

On white

6.06

#405CBB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.47

#405CBB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #405CBB

6.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##405CBB	#FFFFFF	#000000	##FFFFFF
##405CBB	1.00	6.06	3.47	6.06
#FFFFFF	6.06	1.00	21.00	1.00
#000000	3.47	21.00	1.00	21.00
##FFFFFF	6.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2568BE

Deuteranopia (green-blind)

#005DB9

Tritanopia (blue-blind)

#007283

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #405cbb;
/* rgb */ color: rgb(64, 92, 187);
/* oklch */ color: oklch(50.5% 0.153 268.2);

Tailwind

colors: {
  custom: {
    50: '#8289d0',
    500: '#405cbb',
    950: '#000000',
  },
}

SCSS

$custom: #405cbb;
$custom-light: #8289d0;
$custom-dark: #000000;

JSON

{
  "hex": "#405cbb",
  "rgb": {
    "r": 64,
    "g": 92,
    "b": 187
  },
  "hsl": {
    "h": 226.341,
    "s": 49.004,
    "l": 49.216
  },
  "oklch": {
    "l": 0.50534,
    "c": 0.15295,
    "h": 268.2
  },
  "luminance": 0.12332
}

Semantic roles & 50–950 ramp

primary

#405CBB

secondary

#C8BB8F

accent

#B94FD9

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0C0B14

muted

#7D7C82

Preview Lab

Preview with #405CBB

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

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