#304587#304587

#304587 is a dark, moderate blue. Relative luminance 0.066; OKLCH L 41.0% C 0.113 H 267.9°. Best body text is #FFFFFF at 9.03:1 contrast (WCAG AA passes).

Color values

HEX	#304587
RGB	rgb(48, 69, 135)
HSL	hsl(226, 48%, 36%)
HSV	hsv(226, 64%, 53%)
CMYK	cmyk(64.4%, 48.9%, 0%, 47.1%)
CIE-LAB	lab(30.96, 14.12, -39.50)
CIE-LCH	lch(30.96, 41.95, 289.67°)
OKLab	oklab(40.99% -0.0041 -0.1129)
OKLCH	oklch(40.99% 0.113 267.9)
XYZ	xyz(7.7187, 6.6332, 23.7905)
Luminance	0.0663 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304587 #877230

analogous

#307087 #304587 #463087

triadic

#304587 #873045 #458730

tetradic

#304587 #873070 #877230 #308746

square

#304587 #873070 #877230 #308746

split-complementary

#304587 #874630 #708730

monochromatic

#10172D #202E5A #304587 #405CB4 #6880C9

Accessibility & contrast

On white

9.03

#304587 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#304587 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304587

9.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304587	#FFFFFF	#000000	##FFFFFF
##304587	1.00	9.03	2.33	9.03
#FFFFFF	9.03	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#244D89

Deuteranopia (green-blind)

#144586

Tritanopia (blue-blind)

#00545F

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #304587;
/* rgb */ color: rgb(48, 69, 135);
/* oklch */ color: oklch(41.0% 0.113 267.9);

Tailwind

colors: {
  custom: {
    50: '#7178aa',
    500: '#304587',
    950: '#000000',
  },
}

SCSS

$custom: #304587;
$custom-light: #7178aa;
$custom-dark: #000000;

JSON

{
  "hex": "#304587",
  "rgb": {
    "r": 48,
    "g": 69,
    "b": 135
  },
  "hsl": {
    "h": 225.517,
    "s": 47.541,
    "l": 35.882
  },
  "oklch": {
    "l": 0.40989,
    "c": 0.11303,
    "h": 267.9
  },
  "luminance": 0.06634
}

Semantic roles & 50–950 ramp

primary

#304587

secondary

#B19E62

accent

#B751D7

background

#F7F7FA

surface

#EDEDF4

border

#C8C8CE

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #304587

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

Preview Lab → · Contrast checker → · Palette generator →