#304EA1#304EA1

#304EA1 is a dark, vivid blue. Relative luminance 0.086; OKLCH L 44.9% C 0.139 H 266.0°. Best body text is #FFFFFF at 7.69:1 contrast (WCAG AA passes).

Color values

HEX	#304EA1
RGB	rgb(48, 78, 161)
HSL	hsl(224, 54%, 41%)
HSV	hsv(224, 70%, 63%)
CMYK	cmyk(70.2%, 51.6%, 0%, 36.9%)
CIE-LAB	lab(35.30, 17.83, -48.34)
CIE-LCH	lch(35.30, 51.52, 290.25°)
OKLab	oklab(44.86% -0.0097 -0.1388)
OKLCH	oklch(44.86% 0.139 266)
XYZ	xyz(10.3741, 8.6493, 34.8341)
Luminance	0.0865 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304EA1 #A18330

analogous

#3086A1 #304EA1 #4A30A1

triadic

#304EA1 #A1304E #4EA130

tetradic

#304EA1 #A13086 #A18330 #30A14A

square

#304EA1 #A13086 #A18330 #30A14A

split-complementary

#304EA1 #A14A30 #86A130

monochromatic

#142043 #223772 #304EA1 #4669C8 #758FD6

Accessibility & contrast

On white

7.69

#304EA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.73

#304EA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304EA1

7.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304EA1	#FFFFFF	#000000	##FFFFFF
##304EA1	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)

#1C58A4

Deuteranopia (green-blind)

#004E9F

Tritanopia (blue-blind)

#006270

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #304ea1;
/* rgb */ color: rgb(48, 78, 161);
/* oklch */ color: oklch(44.9% 0.139 266.0);

Tailwind

colors: {
  custom: {
    50: '#767fbd',
    500: '#304ea1',
    950: '#000000',
  },
}

SCSS

$custom: #304ea1;
$custom-light: #767fbd;
$custom-dark: #000000;

JSON

{
  "hex": "#304ea1",
  "rgb": {
    "r": 48,
    "g": 78,
    "b": 161
  },
  "hsl": {
    "h": 224.071,
    "s": 54.067,
    "l": 40.98
  },
  "oklch": {
    "l": 0.44863,
    "c": 0.13916,
    "h": 266
  },
  "luminance": 0.0865
}

Semantic roles & 50–950 ramp

primary

#304EA1

secondary

#BEA96F

accent

#B64ADD

background

#F7F7FB

surface

#EEEEF7

border

#C9C9D0

text

#0A0A12

muted

#7C7C81

Preview Lab

Preview with #304EA1

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

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