#404EB3#404EB3

#404EB3 is a mid, vivid blue. Relative luminance 0.098; OKLCH L 47.1% C 0.160 H 272.7°. Best body text is #FFFFFF at 7.10:1 contrast (WCAG AA passes).

Color values

HEX	#404EB3
RGB	rgb(64, 78, 179)
HSL	hsl(233, 47%, 48%)
HSV	hsv(233, 64%, 70%)
CMYK	cmyk(64.2%, 56.4%, 0%, 29.8%)
CIE-LAB	lab(37.47, 26.97, -55.51)
CIE-LCH	lch(37.47, 61.71, 295.92°)
OKLab	oklab(47.14% 0.0076 -0.1595)
OKLCH	oklch(47.14% 0.16 272.7)
XYZ	xyz(12.9727, 9.7923, 43.8456)
Luminance	0.0979 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#404EB3 #B3A540

analogous

#4087B3 #404EB3 #6C40B3

triadic

#404EB3 #B3404E #4EB340

tetradic

#404EB3 #B34087 #B3A540 #40B36C

square

#404EB3 #B34087 #B3A540 #40B36C

split-complementary

#404EB3 #B36C40 #87B340

monochromatic

#202759 #303A86 #404EB3 #6773C9 #949DD9

Accessibility & contrast

On white

7.10

#404EB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.96

#404EB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #404EB3

7.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##404EB3	#FFFFFF	#000000	##FFFFFF
##404EB3	1.00	7.10	2.96	7.10
#FFFFFF	7.10	1.00	21.00	1.00
#000000	2.96	21.00	1.00	21.00
##FFFFFF	7.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DB6

Deuteranopia (green-blind)

#0053B1

Tritanopia (blue-blind)

#006679

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #404eb3;
/* rgb */ color: rgb(64, 78, 179);
/* oklch */ color: oklch(47.1% 0.160 272.7);

Tailwind

colors: {
  custom: {
    50: '#817fca',
    500: '#404eb3',
    950: '#000000',
  },
}

SCSS

$custom: #404eb3;
$custom-light: #817fca;
$custom-dark: #000000;

JSON

{
  "hex": "#404eb3",
  "rgb": {
    "r": 64,
    "g": 78,
    "b": 179
  },
  "hsl": {
    "h": 232.696,
    "s": 47.325,
    "l": 47.647
  },
  "oklch": {
    "l": 0.47141,
    "c": 0.15973,
    "h": 272.7
  },
  "luminance": 0.09793
}

Semantic roles & 50–950 ramp

primary

#404EB3

secondary

#C4BD8A

accent

#C751D7

background

#F8F7FC

surface

#F0EEF8

border

#CBC9D1

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #404EB3

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

Preview Lab → · Contrast checker → · Palette generator →