#304DA5#304DA5

#304DA5 is a dark, vivid blue. Relative luminance 0.087; OKLCH L 45.0% C 0.146 H 266.7°. Best body text is #FFFFFF at 7.69:1 contrast (WCAG AA passes).

Color values

HEX	#304DA5
RGB	rgb(48, 77, 165)
HSL	hsl(225, 55%, 42%)
HSV	hsv(225, 71%, 65%)
CMYK	cmyk(70.9%, 53.3%, 0%, 35.3%)
CIE-LAB	lab(35.30, 20.00, -50.73)
CIE-LCH	lch(35.30, 54.53, 291.52°)
OKLab	oklab(44.96% -0.0084 -0.1459)
OKLCH	oklch(44.96% 0.146 266.7)
XYZ	xyz(10.6620, 8.6517, 36.6981)
Luminance	0.0865 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304DA5 #A58830

analogous

#3088A5 #304DA5 #4D30A5

triadic

#304DA5 #A5304D #4DA530

tetradic

#304DA5 #A53088 #A58830 #30A54D

square

#304DA5 #A53088 #A58830 #30A54D

split-complementary

#304DA5 #A54D30 #88A530

monochromatic

#142146 #223776 #304DA5 #4868CA #7890D8

Accessibility & contrast

On white

7.69

#304DA5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.73

#304DA5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304DA5

7.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304DA5	#FFFFFF	#000000	##FFFFFF
##304DA5	1.00	7.69	2.73	7.69
#FFFFFF	7.69	1.00	21.00	1.00
#000000	2.73	21.00	1.00	21.00
##FFFFFF	7.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1159A8

Deuteranopia (green-blind)

#004EA3

Tritanopia (blue-blind)

#006271

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #304da5;
/* rgb */ color: rgb(48, 77, 165);
/* oklch */ color: oklch(45.0% 0.146 266.7);

Tailwind

colors: {
  custom: {
    50: '#777ec0',
    500: '#304da5',
    950: '#000000',
  },
}

SCSS

$custom: #304da5;
$custom-light: #777ec0;
$custom-dark: #000000;

JSON

{
  "hex": "#304da5",
  "rgb": {
    "r": 48,
    "g": 77,
    "b": 165
  },
  "hsl": {
    "h": 225.128,
    "s": 54.93,
    "l": 41.765
  },
  "oklch": {
    "l": 0.44957,
    "c": 0.14611,
    "h": 266.7
  },
  "luminance": 0.08653
}

Semantic roles & 50–950 ramp

primary

#304DA5

secondary

#C0AC71

accent

#B94ADE

background

#F7F7FB

surface

#EEEEF7

border

#C9C9D0

text

#0A0912

muted

#7C7B81

Preview Lab

Preview with #304DA5

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

Preview Lab → · Contrast checker → · Palette generator →