#303FA5#303FA5

#303FA5 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.2% C 0.164 H 271.1°. Best body text is #FFFFFF at 8.82:1 contrast (WCAG AA passes).

Color values

HEX	#303FA5
RGB	rgb(48, 63, 165)
HSL	hsl(232, 55%, 42%)
HSV	hsv(232, 71%, 65%)
CMYK	cmyk(70.9%, 61.8%, 0%, 35.3%)
CIE-LAB	lab(31.58, 29.28, -56.79)
CIE-LCH	lch(31.58, 63.89, 297.27°)
OKLab	oklab(42.17% 0.0031 -0.1639)
OKLCH	oklch(42.17% 0.164 271.1)
XYZ	xyz(9.7857, 6.8990, 36.4060)
Luminance	0.0690 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303FA5 #A59630

analogous

#307AA5 #303FA5 #5C30A5

triadic

#303FA5 #A5303F #3FA530

tetradic

#303FA5 #A5307A #A59630 #30A55C

square

#303FA5 #A5307A #A59630 #30A55C

split-complementary

#303FA5 #A55C30 #7AA530

monochromatic

#141B46 #222D76 #303FA5 #4859CA #7884D8

Accessibility & contrast

On white

8.82

#303FA5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.38

#303FA5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303FA5

8.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303FA5	#FFFFFF	#000000	##FFFFFF
##303FA5	1.00	8.82	2.38	8.82
#FFFFFF	8.82	1.00	21.00	1.00
#000000	2.38	21.00	1.00	21.00
##FFFFFF	8.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050A8

Deuteranopia (green-blind)

#0045A3

Tritanopia (blue-blind)

#00596C

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #303fa5;
/* rgb */ color: rgb(48, 63, 165);
/* oklch */ color: oklch(42.2% 0.164 271.1);

Tailwind

colors: {
  custom: {
    50: '#7874c1',
    500: '#303fa5',
    950: '#000000',
  },
}

SCSS

$custom: #303fa5;
$custom-light: #7874c1;
$custom-dark: #000000;

JSON

{
  "hex": "#303fa5",
  "rgb": {
    "r": 48,
    "g": 63,
    "b": 165
  },
  "hsl": {
    "h": 232.308,
    "s": 54.93,
    "l": 41.765
  },
  "oklch": {
    "l": 0.42166,
    "c": 0.16389,
    "h": 271.1
  },
  "luminance": 0.069
}

Semantic roles & 50–950 ramp

primary

#303FA5

secondary

#C0B671

accent

#CB4ADE

background

#F7F7FB

surface

#EEEDF7

border

#C9C8D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #303FA5

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

Preview Lab → · Contrast checker → · Palette generator →