#1D3380#1D3380

#1D3380 is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.5% C 0.133 H 267.1°. Best body text is #FFFFFF at 11.43:1 contrast (WCAG AA passes).

Color values

HEX	#1D3380
RGB	rgb(29, 51, 128)
HSL	hsl(227, 63%, 31%)
HSV	hsv(227, 77%, 50%)
CMYK	cmyk(77.3%, 60.2%, 0%, 49.8%)
CIE-LAB	lab(24.28, 20.77, -45.98)
CIE-LCH	lch(24.28, 50.45, 294.31°)
OKLab	oklab(35.5% -0.0068 -0.1327)
OKLCH	oklch(35.5% 0.133 267.1)
XYZ	xyz(5.5854, 4.1868, 20.9316)
Luminance	0.0419 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3380 #806A1D

analogous

#1D6480 #1D3380 #391D80

triadic

#1D3380 #801D33 #33801D

tetradic

#1D3380 #801D64 #806A1D #1D8039

square

#1D3380 #801D64 #806A1D #1D8039

split-complementary

#1D3380 #80391D #64801D

monochromatic

#060B1C #121F4E #1D3380 #2847B2 #4363D4

Accessibility & contrast

On white

11.43

#1D3380 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#1D3380 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3380

11.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3380	#FFFFFF	#000000	##FFFFFF
##1D3380	1.00	11.43	1.84	11.43
#FFFFFF	11.43	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E83

Deuteranopia (green-blind)

#00357E

Tritanopia (blue-blind)

#004654

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1d3380;
/* rgb */ color: rgb(29, 51, 128);
/* oklch */ color: oklch(35.5% 0.133 267.1);

Tailwind

colors: {
  custom: {
    50: '#696aa6',
    500: '#1d3380',
    950: '#000000',
  },
}

SCSS

$custom: #1d3380;
$custom-light: #696aa6;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3380",
  "rgb": {
    "r": 29,
    "g": 51,
    "b": 128
  },
  "hsl": {
    "h": 226.667,
    "s": 63.057,
    "l": 30.784
  },
  "oklch": {
    "l": 0.35504,
    "c": 0.13288,
    "h": 267.1
  },
  "luminance": 0.04187
}

Semantic roles & 50–950 ramp

primary

#1D3380

secondary

#B39B45

accent

#C242E6

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1D3380

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

Preview Lab → · Contrast checker → · Palette generator →