#304AAD#304AAD

#304AAD is a dark, vivid blue. Relative luminance 0.085; OKLCH L 45.0% C 0.161 H 268.1°. Best body text is #FFFFFF at 7.75:1 contrast (WCAG AA passes).

Color values

HEX	#304AAD
RGB	rgb(48, 74, 173)
HSL	hsl(228, 57%, 43%)
HSV	hsv(228, 72%, 68%)
CMYK	cmyk(72.3%, 57.2%, 0%, 32.2%)
CIE-LAB	lab(35.09, 24.99, -55.85)
CIE-LCH	lch(35.09, 61.19, 294.10°)
OKLab	oklab(44.98% -0.0054 -0.161)
OKLCH	oklch(44.98% 0.161 268.1)
XYZ	xyz(11.2079, 8.5419, 40.5851)
Luminance	0.0854 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304AAD #AD9330

analogous

#3088AD #304AAD #5430AD

triadic

#304AAD #AD304A #4AAD30

tetradic

#304AAD #AD3088 #AD9330 #30AD54

square

#304AAD #AD3088 #AD9330 #30AD54

split-complementary

#304AAD #AD5430 #88AD30

monochromatic

#15214D #23367D #304AAD #4D67CE #7D90DB

Accessibility & contrast

On white

7.75

#304AAD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.71

#304AAD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304AAD

7.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304AAD	#FFFFFF	#000000	##FFFFFF
##304AAD	1.00	7.75	2.71	7.75
#FFFFFF	7.75	1.00	21.00	1.00
#000000	2.71	21.00	1.00	21.00
##FFFFFF	7.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058B0

Deuteranopia (green-blind)

#004DAB

Tritanopia (blue-blind)

#006274

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #304aad;
/* rgb */ color: rgb(48, 74, 173);
/* oklch */ color: oklch(45.0% 0.161 268.1);

Tailwind

colors: {
  custom: {
    50: '#797cc6',
    500: '#304aad',
    950: '#000000',
  },
}

SCSS

$custom: #304aad;
$custom-light: #797cc6;
$custom-dark: #000000;

JSON

{
  "hex": "#304aad",
  "rgb": {
    "r": 48,
    "g": 74,
    "b": 173
  },
  "hsl": {
    "h": 227.52,
    "s": 56.561,
    "l": 43.333
  },
  "oklch": {
    "l": 0.44981,
    "c": 0.16108,
    "h": 268.1
  },
  "luminance": 0.08543
}

Semantic roles & 50–950 ramp

primary

#304AAD

secondary

#C3B375

accent

#C048E0

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0A0913

muted

#7C7B82

Preview Lab

Preview with #304AAD

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

Preview Lab → · Contrast checker → · Palette generator →