#1D3A9C#1D3A9C

#1D3A9C is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.5% C 0.163 H 266.1°. Best body text is #FFFFFF at 9.82:1 contrast (WCAG AA passes).

Color values

HEX	#1D3A9C
RGB	rgb(29, 58, 156)
HSL	hsl(226, 69%, 36%)
HSV	hsv(226, 81%, 61%)
CMYK	cmyk(81.4%, 62.8%, 0%, 38.8%)
CIE-LAB	lab(28.61, 27.02, -56.23)
CIE-LCH	lch(28.61, 62.38, 295.66°)
OKLab	oklab(39.48% -0.0111 -0.1627)
OKLCH	oklch(39.48% 0.163 266.1)
XYZ	xyz(8.0184, 5.6867, 32.1211)
Luminance	0.0569 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3A9C #9C7F1D

analogous

#1D7A9C #1D3A9C #401D9C

triadic

#1D3A9C #9C1D3A #3A9C1D

tetradic

#1D3A9C #9C1D7A #9C7F1D #1D9C40

square

#1D3A9C #9C1D7A #9C7F1D #1D9C40

split-complementary

#1D3A9C #9C401D #7A9C1D

monochromatic

#0A1435 #132768 #1D3A9C #274DD0 #5474DF

Accessibility & contrast

On white

9.82

#1D3A9C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#1D3A9C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3A9C

9.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3A9C	#FFFFFF	#000000	##FFFFFF
##1D3A9C	1.00	9.82	2.14	9.82
#FFFFFF	9.82	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A9F

Deuteranopia (green-blind)

#003E9A

Tritanopia (blue-blind)

#005365

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1d3a9c;
/* rgb */ color: rgb(29, 58, 156);
/* oklch */ color: oklch(39.5% 0.163 266.1);

Tailwind

colors: {
  custom: {
    50: '#706fba',
    500: '#1d3a9c',
    950: '#000000',
  },
}

SCSS

$custom: #1d3a9c;
$custom-light: #706fba;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3a9c",
  "rgb": {
    "r": 29,
    "g": 58,
    "b": 156
  },
  "hsl": {
    "h": 226.299,
    "s": 68.649,
    "l": 36.275
  },
  "oklch": {
    "l": 0.39482,
    "c": 0.16306,
    "h": 266.1
  },
  "luminance": 0.05688
}

Semantic roles & 50–950 ramp

primary

#1D3A9C

secondary

#C2A952

accent

#C33CEB

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #1D3A9C

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

Preview Lab → · Contrast checker → · Palette generator →