#404EB7#404EB7

#404EB7 is a mid, vivid blue. Relative luminance 0.100; OKLCH L 47.5% C 0.165 H 272.7°. Best body text is #FFFFFF at 7.02:1 contrast (WCAG AA passes).

Color values

HEX	#404EB7
RGB	rgb(64, 78, 183)
HSL	hsl(233, 48%, 48%)
HSV	hsv(233, 65%, 72%)
CMYK	cmyk(65%, 57.4%, 0%, 28.2%)
CIE-LAB	lab(37.76, 28.38, -57.38)
CIE-LCH	lch(37.76, 64.02, 296.32°)
OKLab	oklab(47.46% 0.0077 -0.1651)
OKLCH	oklch(47.46% 0.165 272.7)
XYZ	xyz(13.3831, 9.9565, 46.0071)
Luminance	0.0996 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#404EB7 #B7A940

analogous

#4089B7 #404EB7 #6D40B7

triadic

#404EB7 #B7404E #4EB740

tetradic

#404EB7 #B74089 #B7A940 #40B76D

square

#404EB7 #B74089 #B7A940 #40B76D

split-complementary

#404EB7 #B76D40 #89B740

monochromatic

#20275C #303B8A #404EB7 #6975CB #979FDB

Accessibility & contrast

On white

7.02

#404EB7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.99

#404EB7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #404EB7

7.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##404EB7	#FFFFFF	#000000	##FFFFFF
##404EB7	1.00	7.02	2.99	7.02
#FFFFFF	7.02	1.00	21.00	1.00
#000000	2.99	21.00	1.00	21.00
##FFFFFF	7.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005EBB

Deuteranopia (green-blind)

#0054B5

Tritanopia (blue-blind)

#00677B

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #404eb7;
/* rgb */ color: rgb(64, 78, 183);
/* oklch */ color: oklch(47.5% 0.165 272.7);

Tailwind

colors: {
  custom: {
    50: '#827fcd',
    500: '#404eb7',
    950: '#000000',
  },
}

SCSS

$custom: #404eb7;
$custom-light: #827fcd;
$custom-dark: #000000;

JSON

{
  "hex": "#404eb7",
  "rgb": {
    "r": 64,
    "g": 78,
    "b": 183
  },
  "hsl": {
    "h": 232.941,
    "s": 48.178,
    "l": 48.431
  },
  "oklch": {
    "l": 0.47456,
    "c": 0.16524,
    "h": 272.7
  },
  "luminance": 0.09958
}

Semantic roles & 50–950 ramp

primary

#404EB7

secondary

#C6BF8D

accent

#C850D8

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0A14

muted

#7D7C82

Preview Lab

Preview with #404EB7

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

Preview Lab → · Contrast checker → · Palette generator →