#172D76#172D76

#172D76 is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.1% C 0.128 H 266.4°. Best body text is #FFFFFF at 12.55:1 contrast (WCAG AA passes).

Color values

HEX#172D76
RGBrgb(23, 45, 118)
HSLhsl(226, 67%, 28%)
HSVhsv(226, 81%, 46%)
CMYKcmyk(80.5%, 61.9%, 0%, 53.7%)
CIE-LABlab(21.46, 20.24, -44.26)
CIE-LCHlch(21.46, 48.67, 294.58°)
OKLaboklab(33.05% -0.008 -0.1279)
OKLCHoklch(33.05% 0.128 266.4)
XYZxyz(4.5606, 3.3664, 17.5455)
Luminance0.0337 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#172D76 #766017
analogous
#175D76 #172D76 #301776
triadic
#172D76 #76172D #2D7617
tetradic
#172D76 #76175D #766017 #177630
square
#172D76 #76175D #766017 #177630
split-complementary
#172D76 #763017 #5D7617
monochromatic
#050A1A #0D1943 #172D76 #2141A9 #3157D7

Accessibility & contrast

On white

12.55
#172D76 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.67
#172D76 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172D76
12.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##172D76#FFFFFF#000000##FFFFFF
##172D761.0012.551.6712.55
#FFFFFF12.551.0021.001.00
#0000001.6721.001.0021.00
##FFFFFF12.551.0021.001.00

Color blindness preview

Protanopia (red-blind)
#003878
Deuteranopia (green-blind)
#002F75
Tritanopia (blue-blind)
#00404C
Achromatopsia (no color)
#333333

Design tokens & code

CSS
--color: #172d76;
/* rgb */ color: rgb(23, 45, 118);
/* oklch */ color: oklch(33.1% 0.128 266.4);
Tailwind
colors: {
  custom: {
    50: '#65659e',
    500: '#172d76',
    950: '#000000',
  },
}
SCSS
$custom: #172d76;
$custom-light: #65659e;
$custom-dark: #000000;
JSON
{
  "hex": "#172d76",
  "rgb": {
    "r": 23,
    "g": 45,
    "b": 118
  },
  "hsl": {
    "h": 226.105,
    "s": 67.376,
    "l": 27.647
  },
  "oklch": {
    "l": 0.3305,
    "c": 0.12811,
    "h": 266.4
  },
  "luminance": 0.03367
}

Semantic roles & 50–950 ramp

primary
#172D76
secondary
#AB923E
accent
#C23EEA
background
#F6F6F9
surface
#EBEBF2
border
#C6C6CC
text
#06050E
muted
#7A7A7E

Preview Lab

Preview with #172D76

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

Preview Lab → · Contrast checker → · Palette generator →

#172D76 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva