#304AA5#304AA5

#304AA5 is a dark, vivid blue. Relative luminance 0.082; OKLCH L 44.3% C 0.150 H 267.8°. Best body text is #FFFFFF at 7.93:1 contrast (WCAG AA passes).

Color values

HEX	#304AA5
RGB	rgb(48, 74, 165)
HSL	hsl(227, 55%, 42%)
HSV	hsv(227, 71%, 65%)
CMYK	cmyk(70.9%, 55.2%, 0%, 35.3%)
CIE-LAB	lab(34.48, 21.99, -52.06)
CIE-LCH	lch(34.48, 56.52, 292.90°)
OKLab	oklab(44.34% -0.0058 -0.1498)
OKLCH	oklch(44.34% 0.15 267.8)
XYZ	xyz(10.4569, 8.2415, 36.6297)
Luminance	0.0824 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304AA5 #A58B30

analogous

#3085A5 #304AA5 #5130A5

triadic

#304AA5 #A5304A #4AA530

tetradic

#304AA5 #A53085 #A58B30 #30A551

square

#304AA5 #A53085 #A58B30 #30A551

split-complementary

#304AA5 #A55130 #85A530

monochromatic

#141F46 #223576 #304AA5 #4865CA #788DD8

Accessibility & contrast

On white

7.93

#304AA5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.65

#304AA5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304AA5

7.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304AA5	#FFFFFF	#000000	##FFFFFF
##304AA5	1.00	7.93	2.65	7.93
#FFFFFF	7.93	1.00	21.00	1.00
#000000	2.65	21.00	1.00	21.00
##FFFFFF	7.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057A8

Deuteranopia (green-blind)

#004CA3

Tritanopia (blue-blind)

#006070

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #304aa5;
/* rgb */ color: rgb(48, 74, 165);
/* oklch */ color: oklch(44.3% 0.150 267.8);

Tailwind

colors: {
  custom: {
    50: '#777cc0',
    500: '#304aa5',
    950: '#000000',
  },
}

SCSS

$custom: #304aa5;
$custom-light: #777cc0;
$custom-dark: #000000;

JSON

{
  "hex": "#304aa5",
  "rgb": {
    "r": 48,
    "g": 74,
    "b": 165
  },
  "hsl": {
    "h": 226.667,
    "s": 54.93,
    "l": 41.765
  },
  "oklch": {
    "l": 0.44335,
    "c": 0.14995,
    "h": 267.8
  },
  "luminance": 0.08243
}

Semantic roles & 50–950 ramp

primary

#304AA5

secondary

#C0AE71

accent

#BD4ADE

background

#F7F7FB

surface

#EEEEF7

border

#C9C9D0

text

#0A0912

muted

#7C7B81

Preview Lab

Preview with #304AA5

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

Preview Lab → · Contrast checker → · Palette generator →