#303AA5#303AA5

#303AA5 is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.2% C 0.170 H 272.3°. Best body text is #FFFFFF at 9.23:1 contrast (WCAG AA passes).

Color values

HEX	#303AA5
RGB	rgb(48, 58, 165)
HSL	hsl(235, 55%, 42%)
HSV	hsv(235, 71%, 65%)
CMYK	cmyk(70.9%, 64.8%, 0%, 35.3%)
CIE-LAB	lab(30.33, 32.52, -58.83)
CIE-LCH	lch(30.33, 67.22, 298.94°)
OKLab	oklab(41.25% 0.0068 -0.1699)
OKLCH	oklch(41.25% 0.17 272.3)
XYZ	xyz(9.5212, 6.3702, 36.3178)
Luminance	0.0637 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303AA5 #A59B30

analogous

#3075A5 #303AA5 #6130A5

triadic

#303AA5 #A5303A #3AA530

tetradic

#303AA5 #A53075 #A59B30 #30A561

square

#303AA5 #A53075 #A59B30 #30A561

split-complementary

#303AA5 #A56130 #75A530

monochromatic

#141946 #222976 #303AA5 #4853CA #7880D8

Accessibility & contrast

On white

9.23

#303AA5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.27

#303AA5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303AA5

9.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303AA5	#FFFFFF	#000000	##FFFFFF
##303AA5	1.00	9.23	2.27	9.23
#FFFFFF	9.23	1.00	21.00	1.00
#000000	2.27	21.00	1.00	21.00
##FFFFFF	9.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA8

Deuteranopia (green-blind)

#0042A3

Tritanopia (blue-blind)

#00566A

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #303aa5;
/* rgb */ color: rgb(48, 58, 165);
/* oklch */ color: oklch(41.2% 0.170 272.3);

Tailwind

colors: {
  custom: {
    50: '#7970c1',
    500: '#303aa5',
    950: '#000000',
  },
}

SCSS

$custom: #303aa5;
$custom-light: #7970c1;
$custom-dark: #000000;

JSON

{
  "hex": "#303aa5",
  "rgb": {
    "r": 48,
    "g": 58,
    "b": 165
  },
  "hsl": {
    "h": 234.872,
    "s": 54.93,
    "l": 41.765
  },
  "oklch": {
    "l": 0.41248,
    "c": 0.17003,
    "h": 272.3
  },
  "luminance": 0.06371
}

Semantic roles & 50–950 ramp

primary

#303AA5

secondary

#C0B971

accent

#D24ADE

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #303AA5

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

Preview Lab → · Contrast checker → · Palette generator →