#303BA1#303BA1

#303BA1 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 41.1% C 0.163 H 272.2°. Best body text is #FFFFFF at 9.27:1 contrast (WCAG AA passes).

Color values

HEX	#303BA1
RGB	rgb(48, 59, 161)
HSL	hsl(234, 54%, 41%)
HSV	hsv(234, 70%, 63%)
CMYK	cmyk(70.2%, 63.4%, 0%, 36.9%)
CIE-LAB	lab(30.23, 30.43, -56.58)
CIE-LCH	lch(30.23, 64.24, 298.28°)
OKLab	oklab(41.07% 0.0063 -0.1633)
OKLCH	oklch(41.07% 0.163 272.2)
XYZ	xyz(9.2137, 6.3286, 34.4473)
Luminance	0.0633 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303BA1 #A19630

analogous

#3073A1 #303BA1 #5D30A1

triadic

#303BA1 #A1303B #3BA130

tetradic

#303BA1 #A13073 #A19630 #30A15D

square

#303BA1 #A13073 #A19630 #30A15D

split-complementary

#303BA1 #A15D30 #73A130

monochromatic

#141843 #222A72 #303BA1 #4653C8 #757FD6

Accessibility & contrast

On white

9.27

#303BA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.27

#303BA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303BA1

9.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303BA1	#FFFFFF	#000000	##FFFFFF
##303BA1	1.00	9.27	2.27	9.27
#FFFFFF	9.27	1.00	21.00	1.00
#000000	2.27	21.00	1.00	21.00
##FFFFFF	9.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CA4

Deuteranopia (green-blind)

#00429F

Tritanopia (blue-blind)

#005568

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #303ba1;
/* rgb */ color: rgb(48, 59, 161);
/* oklch */ color: oklch(41.1% 0.163 272.2);

Tailwind

colors: {
  custom: {
    50: '#7871be',
    500: '#303ba1',
    950: '#000000',
  },
}

SCSS

$custom: #303ba1;
$custom-light: #7871be;
$custom-dark: #000000;

JSON

{
  "hex": "#303ba1",
  "rgb": {
    "r": 48,
    "g": 59,
    "b": 161
  },
  "hsl": {
    "h": 234.159,
    "s": 54.067,
    "l": 40.98
  },
  "oklch": {
    "l": 0.41066,
    "c": 0.16341,
    "h": 272.2
  },
  "luminance": 0.0633
}

Semantic roles & 50–950 ramp

primary

#303BA1

secondary

#BEB66F

accent

#CF4ADD

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #303BA1

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

Preview Lab → · Contrast checker → · Palette generator →