#1D3386#1D3386

#1D3386 is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.0% C 0.141 H 267.3°. Best body text is #FFFFFF at 11.23:1 contrast (WCAG AA passes).

Color values

HEX	#1D3386
RGB	rgb(29, 51, 134)
HSL	hsl(227, 64%, 32%)
HSV	hsv(227, 78%, 53%)
CMYK	cmyk(78.4%, 61.9%, 0%, 47.5%)
CIE-LAB	lab(24.79, 23.16, -48.90)
CIE-LCH	lch(24.79, 54.11, 295.34°)
OKLab	oklab(36.05% -0.0066 -0.1413)
OKLCH	oklch(36.05% 0.141 267.3)
XYZ	xyz(5.9921, 4.3494, 23.0734)
Luminance	0.0435 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3386 #86701D

analogous

#1D6786 #1D3386 #3C1D86

triadic

#1D3386 #861D33 #33861D

tetradic

#1D3386 #861D67 #86701D #1D863C

square

#1D3386 #861D67 #86701D #1D863C

split-complementary

#1D3386 #863C1D #67861D

monochromatic

#070D21 #122054 #1D3386 #2846B8 #4665D7

Accessibility & contrast

On white

11.23

#1D3386 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#1D3386 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3386

11.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3386	#FFFFFF	#000000	##FFFFFF
##1D3386	1.00	11.23	1.87	11.23
#FFFFFF	11.23	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004089

Deuteranopia (green-blind)

#003684

Tritanopia (blue-blind)

#004857

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1d3386;
/* rgb */ color: rgb(29, 51, 134);
/* oklch */ color: oklch(36.0% 0.141 267.3);

Tailwind

colors: {
  custom: {
    50: '#6b6aaa',
    500: '#1d3386',
    950: '#000000',
  },
}

SCSS

$custom: #1d3386;
$custom-light: #6b6aaa;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3386",
  "rgb": {
    "r": 29,
    "g": 51,
    "b": 134
  },
  "hsl": {
    "h": 227.429,
    "s": 64.417,
    "l": 31.961
  },
  "oklch": {
    "l": 0.36049,
    "c": 0.14145,
    "h": 267.3
  },
  "luminance": 0.0435
}

Semantic roles & 50–950 ramp

primary

#1D3386

secondary

#B9A146

accent

#C440E7

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080610

muted

#7A7A7F

Preview Lab

Preview with #1D3386

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

Preview Lab → · Contrast checker → · Palette generator →