#304E8D#304E8D

#304E8D is a dark, moderate blue. Relative luminance 0.080; OKLCH L 43.4% C 0.110 H 263.4°. Best body text is #FFFFFF at 8.08:1 contrast (WCAG AA passes).

Color values

HEX	#304E8D
RGB	rgb(48, 78, 141)
HSL	hsl(221, 49%, 37%)
HSV	hsv(221, 66%, 55%)
CMYK	cmyk(66%, 44.7%, 0%, 44.7%)
CIE-LAB	lab(33.98, 10.32, -38.34)
CIE-LCH	lch(33.98, 39.71, 285.07°)
OKLab	oklab(43.43% -0.0127 -0.1094)
OKLCH	oklch(43.43% 0.11 263.4)
XYZ	xyz(8.7494, 7.9994, 26.2771)
Luminance	0.0800 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304E8D #8D6F30

analogous

#307D8D #304E8D #41308D

triadic

#304E8D #8D304E #4E8D30

tetradic

#304E8D #8D307D #8D6F30 #308D41

square

#304E8D #8D307D #8D6F30 #308D41

split-complementary

#304E8D #8D4130 #7D8D30

monochromatic

#111B32 #20355F #304E8D #4067BB #6B8ACD

Accessibility & contrast

On white

8.08

#304E8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.60

#304E8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304E8D

8.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304E8D	#FFFFFF	#000000	##FFFFFF
##304E8D	1.00	8.08	2.60	8.08
#FFFFFF	8.08	1.00	21.00	1.00
#000000	2.60	21.00	1.00	21.00
##FFFFFF	8.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#30548F

Deuteranopia (green-blind)

#224C8C

Tritanopia (blue-blind)

#005C66

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #304e8d;
/* rgb */ color: rgb(48, 78, 141);
/* oklch */ color: oklch(43.4% 0.110 263.4);

Tailwind

colors: {
  custom: {
    50: '#727faf',
    500: '#304e8d',
    950: '#000000',
  },
}

SCSS

$custom: #304e8d;
$custom-light: #727faf;
$custom-dark: #000000;

JSON

{
  "hex": "#304e8d",
  "rgb": {
    "r": 48,
    "g": 78,
    "b": 141
  },
  "hsl": {
    "h": 220.645,
    "s": 49.206,
    "l": 37.059
  },
  "oklch": {
    "l": 0.43431,
    "c": 0.11016,
    "h": 263.4
  },
  "luminance": 0.08
}

Semantic roles & 50–950 ramp

primary

#304E8D

secondary

#B49A65

accent

#AC4FD9

background

#F7F7FA

surface

#EDEEF4

border

#C8C9CE

text

#090A10

muted

#7B7C7F

Preview Lab

Preview with #304E8D

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

Preview Lab → · Contrast checker → · Palette generator →