#304EA7#304EA7

#304EA7 is a mid, vivid blue. Relative luminance 0.089; OKLCH L 45.3% C 0.148 H 266.5°. Best body text is #FFFFFF at 7.57:1 contrast (WCAG AA passes).

Color values

HEX	#304EA7
RGB	rgb(48, 78, 167)
HSL	hsl(225, 55%, 42%)
HSV	hsv(225, 71%, 65%)
CMYK	cmyk(71.3%, 53.3%, 0%, 34.5%)
CIE-LAB	lab(35.73, 20.09, -51.24)
CIE-LCH	lch(35.73, 55.04, 291.40°)
OKLab	oklab(45.32% -0.0091 -0.1474)
OKLCH	oklch(45.32% 0.148 266.5)
XYZ	xyz(10.9159, 8.8661, 37.6878)
Luminance	0.0887 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304EA7 #A78930

analogous

#308AA7 #304EA7 #4E30A7

triadic

#304EA7 #A7304E #4EA730

tetradic

#304EA7 #A7308A #A78930 #30A74E

square

#304EA7 #A7308A #A78930 #30A74E

split-complementary

#304EA7 #A74E30 #8AA730

monochromatic

#152248 #223877 #304EA7 #496ACB #7991D8

Accessibility & contrast

On white

7.57

#304EA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.77

#304EA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304EA7

7.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304EA7	#FFFFFF	#000000	##FFFFFF
##304EA7	1.00	7.57	2.77	7.57
#FFFFFF	7.57	1.00	21.00	1.00
#000000	2.77	21.00	1.00	21.00
##FFFFFF	7.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#115AAA

Deuteranopia (green-blind)

#004FA5

Tritanopia (blue-blind)

#006373

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #304ea7;
/* rgb */ color: rgb(48, 78, 167);
/* oklch */ color: oklch(45.3% 0.148 266.5);

Tailwind

colors: {
  custom: {
    50: '#787fc2',
    500: '#304ea7',
    950: '#000000',
  },
}

SCSS

$custom: #304ea7;
$custom-light: #787fc2;
$custom-dark: #000000;

JSON

{
  "hex": "#304ea7",
  "rgb": {
    "r": 48,
    "g": 78,
    "b": 167
  },
  "hsl": {
    "h": 224.874,
    "s": 55.349,
    "l": 42.157
  },
  "oklch": {
    "l": 0.4532,
    "c": 0.14765,
    "h": 266.5
  },
  "luminance": 0.08867
}

Semantic roles & 50–950 ramp

primary

#304EA7

secondary

#C1AD72

accent

#B949DF

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0A12

muted

#7C7C81

Preview Lab

Preview with #304EA7

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

Preview Lab → · Contrast checker → · Palette generator →