#304E89#304E89

#304E89 is a dark, moderate blue. Relative luminance 0.079; OKLCH L 43.2% C 0.104 H 262.5°. Best body text is #FFFFFF at 8.15:1 contrast (WCAG AA passes).

Color values

HEX	#304E89
RGB	rgb(48, 78, 137)
HSL	hsl(220, 48%, 36%)
HSV	hsv(220, 65%, 54%)
CMYK	cmyk(65%, 43.1%, 0%, 46.3%)
CIE-LAB	lab(33.74, 8.84, -36.29)
CIE-LCH	lch(33.74, 37.35, 283.69°)
OKLab	oklab(43.16% -0.0136 -0.1034)
OKLCH	oklch(43.16% 0.104 262.5)
XYZ	xyz(8.4571, 7.8825, 24.7379)
Luminance	0.0788 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#304E89 #896B30

analogous

#307B89 #304E89 #3F3089

triadic

#304E89 #89304E #4E8930

tetradic

#304E89 #89307B #896B30 #30893F

square

#304E89 #89307B #896B30 #30893F

split-complementary

#304E89 #893F30 #7B8930

monochromatic

#101A2E #20345C #304E89 #4068B6 #698ACA

Accessibility & contrast

On white

8.15

#304E89 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.58

#304E89 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #304E89

8.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##304E89	#FFFFFF	#000000	##FFFFFF
##304E89	1.00	8.15	2.58	8.15
#FFFFFF	8.15	1.00	21.00	1.00
#000000	2.58	21.00	1.00	21.00
##FFFFFF	8.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#33548B

Deuteranopia (green-blind)

#264C88

Tritanopia (blue-blind)

#005B65

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #304e89;
/* rgb */ color: rgb(48, 78, 137);
/* oklch */ color: oklch(43.2% 0.104 262.5);

Tailwind

colors: {
  custom: {
    50: '#727fac',
    500: '#304e89',
    950: '#000000',
  },
}

SCSS

$custom: #304e89;
$custom-light: #727fac;
$custom-dark: #000000;

JSON

{
  "hex": "#304e89",
  "rgb": {
    "r": 48,
    "g": 78,
    "b": 137
  },
  "hsl": {
    "h": 219.775,
    "s": 48.108,
    "l": 36.275
  },
  "oklch": {
    "l": 0.43163,
    "c": 0.10427,
    "h": 262.5
  },
  "luminance": 0.07883
}

Semantic roles & 50–950 ramp

primary

#304E89

secondary

#B29763

accent

#AA50D8

background

#F7F7FA

surface

#EDEEF4

border

#C8C9CE

text

#080A10

muted

#7B7C7F

Preview Lab

Preview with #304E89

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

Preview Lab → · Contrast checker → · Palette generator →