#304287#304287

#304287 is a dark, moderate blue. Relative luminance 0.063; OKLCH L 40.3% C 0.117 H 269.5°. Best body text is #FFFFFF at 9.31:1 contrast (WCAG AA passes).

Color values

HEX	#304287
RGB	rgb(48, 66, 135)
HSL	hsl(228, 48%, 36%)
HSV	hsv(228, 64%, 53%)
CMYK	cmyk(64.4%, 51.1%, 0%, 47.1%)
CIE-LAB	lab(30.09, 16.16, -40.89)
CIE-LCH	lch(30.09, 43.97, 291.56°)
OKLab	oklab(40.33% -0.0009 -0.1171)
OKLCH	oklch(40.33% 0.117 269.5)
XYZ	xyz(7.5388, 6.2734, 23.7306)
Luminance	0.0627 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304287 #877530

analogous

#306D87 #304287 #493087

triadic

#304287 #873042 #428730

tetradic

#304287 #87306D #877530 #308749

square

#304287 #87306D #877530 #308749

split-complementary

#304287 #874930 #6D8730

monochromatic

#10162D #202C5A #304287 #4058B4 #687CC9

Accessibility & contrast

On white

9.31

#304287 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#304287 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304287

9.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304287	#FFFFFF	#000000	##FFFFFF
##304287	1.00	9.31	2.25	9.31
#FFFFFF	9.31	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D4B89

Deuteranopia (green-blind)

#084386

Tritanopia (blue-blind)

#00525E

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #304287;
/* rgb */ color: rgb(48, 66, 135);
/* oklch */ color: oklch(40.3% 0.117 269.5);

Tailwind

colors: {
  custom: {
    50: '#7276aa',
    500: '#304287',
    950: '#000000',
  },
}

SCSS

$custom: #304287;
$custom-light: #7276aa;
$custom-dark: #000000;

JSON

{
  "hex": "#304287",
  "rgb": {
    "r": 48,
    "g": 66,
    "b": 135
  },
  "hsl": {
    "h": 227.586,
    "s": 47.541,
    "l": 35.882
  },
  "oklch": {
    "l": 0.40331,
    "c": 0.11708,
    "h": 269.5
  },
  "luminance": 0.06274
}

Semantic roles & 50–950 ramp

primary

#304287

secondary

#B1A062

accent

#BB51D7

background

#F7F7FA

surface

#EDEDF4

border

#C8C8CE

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #304287

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

Preview Lab → · Contrast checker → · Palette generator →