#304CA1#304CA1

#304CA1 is a dark, vivid blue. Relative luminance 0.084; OKLCH L 44.4% C 0.142 H 266.8°. Best body text is #FFFFFF at 7.85:1 contrast (WCAG AA passes).

Color values

HEX	#304CA1
RGB	rgb(48, 76, 161)
HSL	hsl(225, 54%, 41%)
HSV	hsv(225, 70%, 63%)
CMYK	cmyk(70.2%, 52.8%, 0%, 36.9%)
CIE-LAB	lab(34.74, 19.16, -49.24)
CIE-LCH	lch(34.74, 52.84, 291.26°)
OKLab	oklab(44.44% -0.0079 -0.1415)
OKLCH	oklch(44.44% 0.142 266.8)
XYZ	xyz(10.2342, 8.3694, 34.7874)
Luminance	0.0837 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304CA1 #A18530

analogous

#3084A1 #304CA1 #4C30A1

triadic

#304CA1 #A1304C #4CA130

tetradic

#304CA1 #A13084 #A18530 #30A14C

square

#304CA1 #A13084 #A18530 #30A14C

split-complementary

#304CA1 #A14C30 #84A130

monochromatic

#141F43 #223672 #304CA1 #4666C8 #758DD6

Accessibility & contrast

On white

7.85

#304CA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#304CA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304CA1

7.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304CA1	#FFFFFF	#000000	##FFFFFF
##304CA1	1.00	7.85	2.67	7.85
#FFFFFF	7.85	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1557A4

Deuteranopia (green-blind)

#004D9F

Tritanopia (blue-blind)

#00606F

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #304ca1;
/* rgb */ color: rgb(48, 76, 161);
/* oklch */ color: oklch(44.4% 0.142 266.8);

Tailwind

colors: {
  custom: {
    50: '#767dbd',
    500: '#304ca1',
    950: '#000000',
  },
}

SCSS

$custom: #304ca1;
$custom-light: #767dbd;
$custom-dark: #000000;

JSON

{
  "hex": "#304ca1",
  "rgb": {
    "r": 48,
    "g": 76,
    "b": 161
  },
  "hsl": {
    "h": 225.133,
    "s": 54.067,
    "l": 40.98
  },
  "oklch": {
    "l": 0.44439,
    "c": 0.14173,
    "h": 266.8
  },
  "luminance": 0.0837
}

Semantic roles & 50–950 ramp

primary

#304CA1

secondary

#BEAA6F

accent

#B94ADD

background

#F7F7FB

surface

#EEEEF7

border

#C9C9D0

text

#0A0912

muted

#7C7B81

Preview Lab

Preview with #304CA1

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

Preview Lab → · Contrast checker → · Palette generator →