#404CB9#404CB9

#404CB9 is a mid, vivid blue. Relative luminance 0.098; OKLCH L 47.2% C 0.171 H 273.2°. Best body text is #FFFFFF at 7.11:1 contrast (WCAG AA passes).

Color values

HEX	#404CB9
RGB	rgb(64, 76, 185)
HSL	hsl(234, 49%, 49%)
HSV	hsv(234, 65%, 73%)
CMYK	cmyk(65.4%, 58.9%, 0%, 27.5%)
CIE-LAB	lab(37.41, 30.36, -59.13)
CIE-LCH	lch(37.41, 66.47, 297.18°)
OKLab	oklab(47.24% 0.0095 -0.1702)
OKLCH	oklch(47.24% 0.171 273.2)
XYZ	xyz(13.4528, 9.7605, 47.0645)
Luminance	0.0976 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#404CB9 #B9AD40

analogous

#4089B9 #404CB9 #7140B9

triadic

#404CB9 #B9404C #4CB940

tetradic

#404CB9 #B94089 #B9AD40 #40B971

square

#404CB9 #B94089 #B9AD40 #40B971

split-complementary

#404CB9 #B97140 #89B940

monochromatic

#21275E #30398C #404CB9 #6B74CC #989FDB

Accessibility & contrast

On white

7.11

#404CB9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.95

#404CB9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #404CB9

7.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##404CB9	#FFFFFF	#000000	##FFFFFF
##404CB9	1.00	7.11	2.95	7.11
#FFFFFF	7.11	1.00	21.00	1.00
#000000	2.95	21.00	1.00	21.00
##FFFFFF	7.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005EBD

Deuteranopia (green-blind)

#0053B7

Tritanopia (blue-blind)

#00677B

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #404cb9;
/* rgb */ color: rgb(64, 76, 185);
/* oklch */ color: oklch(47.2% 0.171 273.2);

Tailwind

colors: {
  custom: {
    50: '#827ecf',
    500: '#404cb9',
    950: '#000000',
  },
}

SCSS

$custom: #404cb9;
$custom-light: #827ecf;
$custom-dark: #000000;

JSON

{
  "hex": "#404cb9",
  "rgb": {
    "r": 64,
    "g": 76,
    "b": 185
  },
  "hsl": {
    "h": 234.05,
    "s": 48.594,
    "l": 48.824
  },
  "oklch": {
    "l": 0.4724,
    "c": 0.17051,
    "h": 273.2
  },
  "luminance": 0.09762
}

Semantic roles & 50–950 ramp

primary

#404CB9

secondary

#C7C18E

accent

#CB50D8

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0914

muted

#7D7B82

Preview Lab

Preview with #404CB9

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

Preview Lab → · Contrast checker → · Palette generator →