#303C69#303C69

#303C69 is a dark, moderate blue. Relative luminance 0.049; OKLCH L 36.9% C 0.079 H 270.8°. Best body text is #FFFFFF at 10.63:1 contrast (WCAG AA passes).

Color values

HEX	#303C69
RGB	rgb(48, 60, 105)
HSL	hsl(227, 37%, 30%)
HSV	hsv(227, 54%, 41%)
CMYK	cmyk(54.3%, 42.9%, 0%, 58.8%)
CIE-LAB	lab(26.39, 9.31, -27.91)
CIE-LCH	lch(26.39, 29.42, 288.45°)
OKLab	oklab(36.88% 0.0012 -0.079)
OKLCH	oklch(36.88% 0.079 270.8)
XYZ	xyz(5.3838, 4.8797, 14.0200)
Luminance	0.0488 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303C69 #695D30

analogous

#305969 #303C69 #403069

triadic

#303C69 #69303C #3C6930

tetradic

#303C69 #693059 #695D30 #306940

square

#303C69 #693059 #695D30 #306940

split-complementary

#303C69 #694030 #596930

monochromatic

#0A0C15 #1D243F #303C69 #435493 #5E70B5

Accessibility & contrast

On white

10.63

#303C69 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.98

#303C69 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303C69

10.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303C69	#FFFFFF	#000000	##FFFFFF
##303C69	1.00	10.63	1.98	10.63
#FFFFFF	10.63	1.00	21.00	1.00
#000000	1.98	21.00	1.00	21.00
##FFFFFF	10.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A416B

Deuteranopia (green-blind)

#243C68

Tritanopia (blue-blind)

#17464D

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #303c69;
/* rgb */ color: rgb(48, 60, 105);
/* oklch */ color: oklch(36.9% 0.079 270.8);

Tailwind

colors: {
  custom: {
    50: '#6d7194',
    500: '#303c69',
    950: '#000000',
  },
}

SCSS

$custom: #303c69;
$custom-light: #6d7194;
$custom-dark: #000000;

JSON

{
  "hex": "#303c69",
  "rgb": {
    "r": 48,
    "g": 60,
    "b": 105
  },
  "hsl": {
    "h": 227.368,
    "s": 37.255,
    "l": 30
  },
  "oklch": {
    "l": 0.36879,
    "c": 0.07905,
    "h": 270.8
  },
  "luminance": 0.0488
}

Semantic roles & 50–950 ramp

primary

#303C69

secondary

#9A8D5A

accent

#B55BCD

background

#F6F6F9

surface

#ECECF1

border

#C7C7CB

text

#07070D

muted

#7A7A7E

Preview Lab

Preview with #303C69

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

Preview Lab → · Contrast checker → · Palette generator →