#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
RGBrgb(48, 60, 105)
HSLhsl(227, 37%, 30%)
HSVhsv(227, 54%, 41%)
CMYKcmyk(54.3%, 42.9%, 0%, 58.8%)
CIE-LABlab(26.39, 9.31, -27.91)
CIE-LCHlch(26.39, 29.42, 288.45°)
OKLaboklab(36.88% 0.0012 -0.079)
OKLCHoklch(36.88% 0.079 270.8)
XYZxyz(5.3838, 4.8797, 14.0200)
Luminance0.0488 (WCAG relative)
Temperaturecool
Familyblue

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
##303C691.0010.631.9810.63
#FFFFFF10.631.0021.001.00
#0000001.9821.001.0021.00
##FFFFFF10.631.0021.001.00

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 →

#303C69 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva