#405ACB#405ACB

#405ACB is a mid, vivid blue. Relative luminance 0.127; OKLCH L 51.3% C 0.177 H 269.4°. Best body text is #FFFFFF at 5.93:1 contrast (WCAG AA passes).

Color values

HEX	#405ACB
RGB	rgb(64, 90, 203)
HSL	hsl(229, 57%, 52%)
HSV	hsv(229, 68%, 80%)
CMYK	cmyk(68.5%, 55.7%, 0%, 20.4%)
CIE-LAB	lab(42.33, 27.78, -61.63)
CIE-LCH	lch(42.33, 67.60, 294.26°)
OKLab	oklab(51.33% -0.0019 -0.1774)
OKLCH	oklch(51.33% 0.177 269.4)
XYZ	xyz(16.5463, 12.7125, 58.0701)
Luminance	0.1271 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#405ACB #CBB140

analogous

#40A0CB #405ACB #6C40CB

triadic

#405ACB #CB405A #5ACB40

tetradic

#405ACB #CB40A0 #CBB140 #40CB6C

square

#405ACB #CB40A0 #CBB140 #40CB6C

split-complementary

#405ACB #CB6C40 #A0CB40

monochromatic

#1F2E72 #2C42A2 #405ACB #7084D8 #A0ADE5

Accessibility & contrast

On white

5.93

#405ACB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.54

#405ACB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #405ACB

5.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##405ACB	#FFFFFF	#000000	##FFFFFF
##405ACB	1.00	5.93	3.54	5.93
#FFFFFF	5.93	1.00	21.00	1.00
#000000	3.54	21.00	1.00	21.00
##FFFFFF	5.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006ACF

Deuteranopia (green-blind)

#005EC9

Tritanopia (blue-blind)

#00758A

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #405acb;
/* rgb */ color: rgb(64, 90, 203);
/* oklch */ color: oklch(51.3% 0.177 269.4);

Tailwind

colors: {
  custom: {
    50: '#8588dc',
    500: '#405acb',
    950: '#000000',
  },
}

SCSS

$custom: #405acb;
$custom-light: #8588dc;
$custom-dark: #000000;

JSON

{
  "hex": "#405acb",
  "rgb": {
    "r": 64,
    "g": 90,
    "b": 203
  },
  "hsl": {
    "h": 228.777,
    "s": 57.202,
    "l": 52.353
  },
  "oklch": {
    "l": 0.51334,
    "c": 0.17741,
    "h": 269.4
  },
  "luminance": 0.12714
}

Semantic roles & 50–950 ramp

primary

#405ACB

secondary

#D2C695

accent

#C447E0

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #405ACB

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

Preview Lab → · Contrast checker → · Palette generator →