#304187#304187

#304187 is a dark, moderate blue. Relative luminance 0.062; OKLCH L 40.1% C 0.118 H 270.1°. Best body text is #FFFFFF at 9.41:1 contrast (WCAG AA passes).

Color values

HEX	#304187
RGB	rgb(48, 65, 135)
HSL	hsl(228, 48%, 36%)
HSV	hsv(228, 64%, 53%)
CMYK	cmyk(64.4%, 51.9%, 0%, 47.1%)
CIE-LAB	lab(29.81, 16.83, -41.35)
CIE-LCH	lch(29.81, 44.65, 292.15°)
OKLab	oklab(40.11% 0.0001 -0.1184)
OKLCH	oklch(40.11% 0.118 270.1)
XYZ	xyz(7.4809, 6.1576, 23.7113)
Luminance	0.0616 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304187 #877630

analogous

#306C87 #304187 #4A3087

triadic

#304187 #873041 #418730

tetradic

#304187 #87306C #877630 #30874A

square

#304187 #87306C #877630 #30874A

split-complementary

#304187 #874A30 #6C8730

monochromatic

#10162D #202B5A #304187 #4057B4 #687BC9

Accessibility & contrast

On white

9.41

#304187 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#304187 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304187

9.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304187	#FFFFFF	#000000	##FFFFFF
##304187	1.00	9.41	2.23	9.41
#FFFFFF	9.41	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A4A8A

Deuteranopia (green-blind)

#044386

Tritanopia (blue-blind)

#00515D

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #304187;
/* rgb */ color: rgb(48, 65, 135);
/* oklch */ color: oklch(40.1% 0.118 270.1);

Tailwind

colors: {
  custom: {
    50: '#7275aa',
    500: '#304187',
    950: '#000000',
  },
}

SCSS

$custom: #304187;
$custom-light: #7275aa;
$custom-dark: #000000;

JSON

{
  "hex": "#304187",
  "rgb": {
    "r": 48,
    "g": 65,
    "b": 135
  },
  "hsl": {
    "h": 228.276,
    "s": 47.541,
    "l": 35.882
  },
  "oklch": {
    "l": 0.40114,
    "c": 0.11845,
    "h": 270.1
  },
  "luminance": 0.06158
}

Semantic roles & 50–950 ramp

primary

#304187

secondary

#B1A162

accent

#BD51D7

background

#F7F7FA

surface

#EDEDF4

border

#C8C8CE

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #304187

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

Preview Lab → · Contrast checker → · Palette generator →