#17377D#17377D

#17377D is a dark, vivid blue. Relative luminance 0.044; OKLCH L 35.9% C 0.125 H 263.1°. Best body text is #FFFFFF at 11.18:1 contrast (WCAG AA passes).

Color values

HEX#17377D
RGBrgb(23, 55, 125)
HSLhsl(221, 69%, 29%)
HSVhsv(221, 82%, 49%)
CMYKcmyk(81.6%, 56%, 0%, 51%)
CIE-LABlab(24.94, 16.01, -43.04)
CIE-LCHlch(24.94, 45.92, 290.40°)
OKLaboklab(35.85% -0.015 -0.1241)
OKLCHoklch(35.85% 0.125 263.1)
XYZxyz(5.4199, 4.3946, 19.9606)
Luminance0.0440 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#17377D #7D5D17
analogous
#176A7D #17377D #2A177D
triadic
#17377D #7D1737 #377D17
tetradic
#17377D #7D176A #7D5D17 #177D2A
square
#17377D #7D176A #7D5D17 #177D2A
split-complementary
#17377D #7D2A17 #6A7D17
monochromatic
#050B1A #0D2049 #17377D #214EB1 #3568DA

Accessibility & contrast

On white

11.18
#17377D on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.88
#17377D on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17377D
11.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##17377D#FFFFFF#000000##FFFFFF
##17377D1.0011.181.8811.18
#FFFFFF11.181.0021.001.00
#0000001.8821.001.0021.00
##FFFFFF11.181.0021.001.00

Color blindness preview

Protanopia (red-blind)
#00407F
Deuteranopia (green-blind)
#00377C
Tritanopia (blue-blind)
#004854
Achromatopsia (no color)
#3B3B3B

Design tokens & code

CSS
--color: #17377d;
/* rgb */ color: rgb(23, 55, 125);
/* oklch */ color: oklch(35.9% 0.125 263.1);
Tailwind
colors: {
  custom: {
    50: '#666da3',
    500: '#17377d',
    950: '#000000',
  },
}
SCSS
$custom: #17377d;
$custom-light: #666da3;
$custom-dark: #000000;
JSON
{
  "hex": "#17377d",
  "rgb": {
    "r": 23,
    "g": 55,
    "b": 125
  },
  "hsl": {
    "h": 221.176,
    "s": 68.919,
    "l": 29.02
  },
  "oklch": {
    "l": 0.35851,
    "c": 0.12501,
    "h": 263.1
  },
  "luminance": 0.04395
}

Semantic roles & 50–950 ramp

primary
#17377D
secondary
#B28D3E
accent
#B53CEC
background
#F6F6FA
surface
#EBEBF4
border
#C6C6CE
text
#07070F
muted
#7A7A7F

Preview Lab

Preview with #17377D

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

Preview Lab → · Contrast checker → · Palette generator →

#17377D Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva