#1C377F#1C377F

#1C377F is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.2% C 0.126 H 265.1°. Best body text is #FFFFFF at 11.04:1 contrast (WCAG AA passes).

Color values

HEX#1C377F
RGBrgb(28, 55, 127)
HSLhsl(224, 64%, 30%)
HSVhsv(224, 78%, 50%)
CMYKcmyk(78%, 56.7%, 0%, 50.2%)
CIE-LABlab(25.29, 17.43, -43.71)
CIE-LCHlch(25.29, 47.05, 291.74°)
OKLaboklab(36.23% -0.0109 -0.126)
OKLCHoklch(36.23% 0.126 265.1)
XYZxyz(5.6745, 4.5109, 20.6462)
Luminance0.0451 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1C377F #7F641C
analogous
#1C697F #1C377F #321C7F
triadic
#1C377F #7F1C37 #377F1C
tetradic
#1C377F #7F1C69 #7F641C #1C7F32
square
#1C377F #7F1C69 #7F641C #1C7F32
split-complementary
#1C377F #7F321C #697F1C
monochromatic
#060C1B #11214D #1C377F #274DB1 #4069D5

Accessibility & contrast

On white

11.04
#1C377F on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.90
#1C377F on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C377F
11.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1C377F#FFFFFF#000000##FFFFFF
##1C377F1.0011.041.9011.04
#FFFFFF11.041.0021.001.00
#0000001.9021.001.0021.00
##FFFFFF11.041.0021.001.00

Color blindness preview

Protanopia (red-blind)
#004182
Deuteranopia (green-blind)
#00387E
Tritanopia (blue-blind)
#004955
Achromatopsia (no color)
#3C3C3C

Design tokens & code

CSS
--color: #1c377f;
/* rgb */ color: rgb(28, 55, 127);
/* oklch */ color: oklch(36.2% 0.126 265.1);
Tailwind
colors: {
  custom: {
    50: '#686da5',
    500: '#1c377f',
    950: '#000000',
  },
}
SCSS
$custom: #1c377f;
$custom-light: #686da5;
$custom-dark: #000000;
JSON
{
  "hex": "#1c377f",
  "rgb": {
    "r": 28,
    "g": 55,
    "b": 127
  },
  "hsl": {
    "h": 223.636,
    "s": 63.871,
    "l": 30.392
  },
  "oklch": {
    "l": 0.36228,
    "c": 0.12645,
    "h": 265.1
  },
  "luminance": 0.04512
}

Semantic roles & 50–950 ramp

primary
#1C377F
secondary
#B39444
accent
#BA41E7
background
#F6F6FA
surface
#EBEBF4
border
#C6C6CE
text
#07070F
muted
#7A7A7F

Preview Lab

Preview with #1C377F

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

Preview Lab → · Contrast checker → · Palette generator →

#1C377F Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva