#1D3A9A#1D3A9A

#1D3A9A is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.3% C 0.160 H 266.0°. Best body text is #FFFFFF at 9.89:1 contrast (WCAG AA passes).

Color values

HEX	#1D3A9A
RGB	rgb(29, 58, 154)
HSL	hsl(226, 68%, 36%)
HSV	hsv(226, 81%, 60%)
CMYK	cmyk(81.2%, 62.3%, 0%, 39.6%)
CIE-LAB	lab(28.43, 26.23, -55.30)
CIE-LCH	lch(28.43, 61.21, 295.38°)
OKLab	oklab(39.3% -0.0111 -0.1599)
OKLCH	oklch(39.3% 0.16 266)
XYZ	xyz(7.8504, 5.6195, 31.2365)
Luminance	0.0562 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3A9A #9A7D1D

analogous

#1D789A #1D3A9A #3E1D9A

triadic

#1D3A9A #9A1D3A #3A9A1D

tetradic

#1D3A9A #9A1D78 #9A7D1D #1D9A3E

square

#1D3A9A #9A1D78 #9A7D1D #1D9A3E

split-complementary

#1D3A9A #9A3E1D #789A1D

monochromatic

#0A1333 #132766 #1D3A9A #274DCE #5373DF

Accessibility & contrast

On white

9.89

#1D3A9A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#1D3A9A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3A9A

9.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3A9A	#FFFFFF	#000000	##FFFFFF
##1D3A9A	1.00	9.89	2.12	9.89
#FFFFFF	9.89	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00499D

Deuteranopia (green-blind)

#003D98

Tritanopia (blue-blind)

#005364

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1d3a9a;
/* rgb */ color: rgb(29, 58, 154);
/* oklch */ color: oklch(39.3% 0.160 266.0);

Tailwind

colors: {
  custom: {
    50: '#6f6fb9',
    500: '#1d3a9a',
    950: '#000000',
  },
}

SCSS

$custom: #1d3a9a;
$custom-light: #6f6fb9;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3a9a",
  "rgb": {
    "r": 29,
    "g": 58,
    "b": 154
  },
  "hsl": {
    "h": 226.08,
    "s": 68.306,
    "l": 35.882
  },
  "oklch": {
    "l": 0.39296,
    "c": 0.16033,
    "h": 266
  },
  "luminance": 0.0562
}

Semantic roles & 50–950 ramp

primary

#1D3A9A

secondary

#C2A851

accent

#C33DEB

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #1D3A9A

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

Preview Lab → · Contrast checker → · Palette generator →