#304C8D#304C8D

#304C8D is a dark, moderate blue. Relative luminance 0.077; OKLCH L 43.0% C 0.113 H 264.6°. Best body text is #FFFFFF at 8.25:1 contrast (WCAG AA passes).

Color values

HEX	#304C8D
RGB	rgb(48, 76, 141)
HSL	hsl(222, 49%, 37%)
HSV	hsv(222, 66%, 55%)
CMYK	cmyk(66%, 46.1%, 0%, 44.7%)
CIE-LAB	lab(33.39, 11.65, -39.29)
CIE-LCH	lch(33.39, 40.98, 286.52°)
OKLab	oklab(42.98% -0.0106 -0.1122)
OKLCH	oklch(42.98% 0.113 264.6)
XYZ	xyz(8.6094, 7.7196, 26.2304)
Luminance	0.0772 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304C8D #8D7130

analogous

#307B8D #304C8D #42308D

triadic

#304C8D #8D304C #4C8D30

tetradic

#304C8D #8D307B #8D7130 #308D42

square

#304C8D #8D307B #8D7130 #308D42

split-complementary

#304C8D #8D4230 #7B8D30

monochromatic

#111B32 #20335F #304C8D #4065BB #6B88CD

Accessibility & contrast

On white

8.25

#304C8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#304C8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304C8D

8.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304C8D	#FFFFFF	#000000	##FFFFFF
##304C8D	1.00	8.25	2.54	8.25
#FFFFFF	8.25	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D538F

Deuteranopia (green-blind)

#1D4B8C

Tritanopia (blue-blind)

#005B65

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #304c8d;
/* rgb */ color: rgb(48, 76, 141);
/* oklch */ color: oklch(43.0% 0.113 264.6);

Tailwind

colors: {
  custom: {
    50: '#727daf',
    500: '#304c8d',
    950: '#000000',
  },
}

SCSS

$custom: #304c8d;
$custom-light: #727daf;
$custom-dark: #000000;

JSON

{
  "hex": "#304c8d",
  "rgb": {
    "r": 48,
    "g": 76,
    "b": 141
  },
  "hsl": {
    "h": 221.935,
    "s": 49.206,
    "l": 37.059
  },
  "oklch": {
    "l": 0.42978,
    "c": 0.11272,
    "h": 264.6
  },
  "luminance": 0.0772
}

Semantic roles & 50–950 ramp

primary

#304C8D

secondary

#B49C65

accent

#AF4FD9

background

#F7F7FA

surface

#EDEEF4

border

#C8C9CE

text

#090910

muted

#7B7B7F

Preview Lab

Preview with #304C8D

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

Preview Lab → · Contrast checker → · Palette generator →