#404CBB#404CBB

#404CBB is a mid, vivid blue. Relative luminance 0.098; OKLCH L 47.4% C 0.173 H 273.1°. Best body text is #FFFFFF at 7.07:1 contrast (WCAG AA passes).

Color values

HEX	#404CBB
RGB	rgb(64, 76, 187)
HSL	hsl(234, 49%, 49%)
HSV	hsv(234, 66%, 73%)
CMYK	cmyk(65.8%, 59.4%, 0%, 26.7%)
CIE-LAB	lab(37.56, 31.06, -60.06)
CIE-LCH	lch(37.56, 67.61, 297.35°)
OKLab	oklab(47.4% 0.0095 -0.1729)
OKLCH	oklch(47.4% 0.173 273.1)
XYZ	xyz(13.6654, 9.8455, 48.1843)
Luminance	0.0985 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.01

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#404CBB #BBAF40

analogous

#408ABB #404CBB #7240BB

triadic

#404CBB #BB404C #4CBB40

tetradic

#404CBB #BB408A #BBAF40 #40BB72

square

#404CBB #BB408A #BBAF40 #40BB72

split-complementary

#404CBB #BB7240 #8ABB40

monochromatic

#212760 #30398D #404CBB #6C75CD #99A0DC

Accessibility & contrast

On white

7.07

#404CBB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.97

#404CBB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #404CBB

7.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##404CBB	#FFFFFF	#000000	##FFFFFF
##404CBB	1.00	7.07	2.97	7.07
#FFFFFF	7.07	1.00	21.00	1.00
#000000	2.97	21.00	1.00	21.00
##FFFFFF	7.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005EBF

Deuteranopia (green-blind)

#0053B9

Tritanopia (blue-blind)

#00677C

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #404cbb;
/* rgb */ color: rgb(64, 76, 187);
/* oklch */ color: oklch(47.4% 0.173 273.1);

Tailwind

colors: {
  custom: {
    50: '#837ed0',
    500: '#404cbb',
    950: '#000000',
  },
}

SCSS

$custom: #404cbb;
$custom-light: #837ed0;
$custom-dark: #000000;

JSON

{
  "hex": "#404cbb",
  "rgb": {
    "r": 64,
    "g": 76,
    "b": 187
  },
  "hsl": {
    "h": 234.146,
    "s": 49.004,
    "l": 49.216
  },
  "oklch": {
    "l": 0.47403,
    "c": 0.17321,
    "h": 273.1
  },
  "luminance": 0.09847
}

Semantic roles & 50–950 ramp

primary

#404CBB

secondary

#C8C28F

accent

#CB4FD9

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0914

muted

#7D7B82

Preview Lab

Preview with #404CBB

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

Preview Lab → · Contrast checker → · Palette generator →