#1D3880#1D3880

#1D3880 is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.6% C 0.126 H 265.1°. Best body text is #FFFFFF at 10.88:1 contrast (WCAG AA passes).

Color values

HEX#1D3880
RGBrgb(29, 56, 128)
HSLhsl(224, 63%, 31%)
HSVhsv(224, 77%, 50%)
CMYKcmyk(77.3%, 56.3%, 0%, 49.8%)
CIE-LABlab(25.71, 17.26, -43.66)
CIE-LCHlch(25.71, 46.95, 291.57°)
OKLaboklab(36.58% -0.0107 -0.1258)
OKLCHoklch(36.58% 0.126 265.1)
XYZxyz(5.8158, 4.6474, 21.0084)
Luminance0.0465 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1D3880 #80651D
analogous
#1D6980 #1D3880 #331D80
triadic
#1D3880 #801D38 #38801D
tetradic
#1D3880 #801D69 #80651D #1D8033
square
#1D3880 #801D69 #80651D #1D8033
split-complementary
#1D3880 #80331D #69801D
monochromatic
#060C1C #12224E #1D3880 #284EB2 #436BD4

Accessibility & contrast

On white

10.88
#1D3880 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.93
#1D3880 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3880
10.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1D3880#FFFFFF#000000##FFFFFF
##1D38801.0010.881.9310.88
#FFFFFF10.881.0021.001.00
#0000001.9321.001.0021.00
##FFFFFF10.881.0021.001.00

Color blindness preview

Protanopia (red-blind)
#004283
Deuteranopia (green-blind)
#00397F
Tritanopia (blue-blind)
#004A56
Achromatopsia (no color)
#3D3D3D

Design tokens & code

CSS
--color: #1d3880;
/* rgb */ color: rgb(29, 56, 128);
/* oklch */ color: oklch(36.6% 0.126 265.1);
Tailwind
colors: {
  custom: {
    50: '#696ea5',
    500: '#1d3880',
    950: '#000000',
  },
}
SCSS
$custom: #1d3880;
$custom-light: #696ea5;
$custom-dark: #000000;
JSON
{
  "hex": "#1d3880",
  "rgb": {
    "r": 29,
    "g": 56,
    "b": 128
  },
  "hsl": {
    "h": 223.636,
    "s": 63.057,
    "l": 30.784
  },
  "oklch": {
    "l": 0.36576,
    "c": 0.12627,
    "h": 265.1
  },
  "luminance": 0.04648
}

Semantic roles & 50–950 ramp

primary
#1D3880
secondary
#B39545
accent
#B942E6
background
#F6F6FA
surface
#ECEBF4
border
#C7C6CE
text
#07070F
muted
#7A7A7F

Preview Lab

Preview with #1D3880

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

Preview Lab → · Contrast checker → · Palette generator →

#1D3880 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva