#304DA1#304DA1

#304DA1 is a dark, vivid blue. Relative luminance 0.085; OKLCH L 44.6% C 0.140 H 266.4°. Best body text is #FFFFFF at 7.77:1 contrast (WCAG AA passes).

Color values

HEX	#304DA1
RGB	rgb(48, 77, 161)
HSL	hsl(225, 54%, 41%)
HSV	hsv(225, 70%, 63%)
CMYK	cmyk(70.2%, 52.2%, 0%, 36.9%)
CIE-LAB	lab(35.02, 18.49, -48.79)
CIE-LCH	lch(35.02, 52.18, 290.76°)
OKLab	oklab(44.65% -0.0088 -0.1402)
OKLCH	oklch(44.65% 0.14 266.4)
XYZ	xyz(10.3036, 8.5083, 34.8106)
Luminance	0.0851 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304DA1 #A18430

analogous

#3085A1 #304DA1 #4B30A1

triadic

#304DA1 #A1304D #4DA130

tetradic

#304DA1 #A13085 #A18430 #30A14B

square

#304DA1 #A13085 #A18430 #30A14B

split-complementary

#304DA1 #A14B30 #85A130

monochromatic

#142043 #223672 #304DA1 #4668C8 #758ED6

Accessibility & contrast

On white

7.77

#304DA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.70

#304DA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304DA1

7.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304DA1	#FFFFFF	#000000	##FFFFFF
##304DA1	1.00	7.77	2.70	7.77
#FFFFFF	7.77	1.00	21.00	1.00
#000000	2.70	21.00	1.00	21.00
##FFFFFF	7.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1958A4

Deuteranopia (green-blind)

#004D9F

Tritanopia (blue-blind)

#00616F

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #304da1;
/* rgb */ color: rgb(48, 77, 161);
/* oklch */ color: oklch(44.6% 0.140 266.4);

Tailwind

colors: {
  custom: {
    50: '#767ebd',
    500: '#304da1',
    950: '#000000',
  },
}

SCSS

$custom: #304da1;
$custom-light: #767ebd;
$custom-dark: #000000;

JSON

{
  "hex": "#304da1",
  "rgb": {
    "r": 48,
    "g": 77,
    "b": 161
  },
  "hsl": {
    "h": 224.602,
    "s": 54.067,
    "l": 40.98
  },
  "oklch": {
    "l": 0.4465,
    "c": 0.14045,
    "h": 266.4
  },
  "luminance": 0.08509
}

Semantic roles & 50–950 ramp

primary

#304DA1

secondary

#BEAA6F

accent

#B84ADD

background

#F7F7FB

surface

#EEEEF7

border

#C9C9D0

text

#0A0912

muted

#7C7B81

Preview Lab

Preview with #304DA1

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

Preview Lab → · Contrast checker → · Palette generator →