#404F9B#404F9B

#404F9B is a mid, vivid blue. Relative luminance 0.090; OKLCH L 45.6% C 0.124 H 272.2°. Best body text is #FFFFFF at 7.47:1 contrast (WCAG AA passes).

Color values

HEX	#404F9B
RGB	rgb(64, 79, 155)
HSL	hsl(230, 42%, 43%)
HSV	hsv(230, 59%, 61%)
CMYK	cmyk(58.7%, 49%, 0%, 39.2%)
CIE-LAB	lab(36.08, 17.90, -43.43)
CIE-LCH	lch(36.08, 46.98, 292.39°)
OKLab	oklab(45.56% 0.0048 -0.124)
OKLCH	oklch(45.56% 0.124 272.2)
XYZ	xyz(10.8248, 9.0477, 32.1799)
Luminance	0.0905 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#404F9B #9B8C40

analogous

#407C9B #404F9B #5E409B

triadic

#404F9B #9B404F #4F9B40

tetradic

#404F9B #9B407C #9B8C40 #409B5E

square

#404F9B #9B407C #9B8C40 #409B5E

split-complementary

#404F9B #9B5E40 #7C9B40

monochromatic

#1C2344 #2E3970 #404F9B #5C6CBC #8893CE

Accessibility & contrast

On white

7.47

#404F9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.81

#404F9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #404F9B

7.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##404F9B	#FFFFFF	#000000	##FFFFFF
##404F9B	1.00	7.47	2.81	7.47
#FFFFFF	7.47	1.00	21.00	1.00
#000000	2.81	21.00	1.00	21.00
##FFFFFF	7.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A599E

Deuteranopia (green-blind)

#1C5199

Tritanopia (blue-blind)

#00606D

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #404f9b;
/* rgb */ color: rgb(64, 79, 155);
/* oklch */ color: oklch(45.6% 0.124 272.2);

Tailwind

colors: {
  custom: {
    50: '#7d80b9',
    500: '#404f9b',
    950: '#000000',
  },
}

SCSS

$custom: #404f9b;
$custom-light: #7d80b9;
$custom-dark: #000000;

JSON

{
  "hex": "#404f9b",
  "rgb": {
    "r": 64,
    "g": 79,
    "b": 155
  },
  "hsl": {
    "h": 230.11,
    "s": 41.553,
    "l": 42.941
  },
  "oklch": {
    "l": 0.45564,
    "c": 0.12411,
    "h": 272.2
  },
  "luminance": 0.09049
}

Semantic roles & 50–950 ramp

primary

#404F9B

secondary

#B8AF7E

accent

#BD56D1

background

#F7F7FB

surface

#EEEEF6

border

#C9C9D0

text

#0A0A11

muted

#7C7C80

Preview Lab

Preview with #404F9B

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

Preview Lab → · Contrast checker → · Palette generator →