#1D3E9A#1D3E9A

#1D3E9A is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.1% C 0.155 H 265.0°. Best body text is #FFFFFF at 9.51:1 contrast (WCAG AA passes).

Color values

HEX	#1D3E9A
RGB	rgb(29, 62, 154)
HSL	hsl(224, 68%, 36%)
HSV	hsv(224, 81%, 60%)
CMYK	cmyk(81.2%, 59.7%, 0%, 39.6%)
CIE-LAB	lab(29.51, 23.51, -53.54)
CIE-LCH	lch(29.51, 58.47, 293.70°)
OKLab	oklab(40.1% -0.0136 -0.1547)
OKLCH	oklch(40.1% 0.155 265)
XYZ	xyz(8.0600, 6.0386, 31.3064)
Luminance	0.0604 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3E9A #9A791D

analogous

#1D7C9A #1D3E9A #3A1D9A

triadic

#1D3E9A #9A1D3E #3E9A1D

tetradic

#1D3E9A #9A1D7C #9A791D #1D9A3A

square

#1D3E9A #9A1D7C #9A791D #1D9A3A

split-complementary

#1D3E9A #9A3A1D #7C9A1D

monochromatic

#0A1533 #132966 #1D3E9A #2753CE #5378DF

Accessibility & contrast

On white

9.51

#1D3E9A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#1D3E9A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3E9A

9.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3E9A	#FFFFFF	#000000	##FFFFFF
##1D3E9A	1.00	9.51	2.21	9.51
#FFFFFF	9.51	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004C9D

Deuteranopia (green-blind)

#004098

Tritanopia (blue-blind)

#005566

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1d3e9a;
/* rgb */ color: rgb(29, 62, 154);
/* oklch */ color: oklch(40.1% 0.155 265.0);

Tailwind

colors: {
  custom: {
    50: '#6f72b9',
    500: '#1d3e9a',
    950: '#000000',
  },
}

SCSS

$custom: #1d3e9a;
$custom-light: #6f72b9;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3e9a",
  "rgb": {
    "r": 29,
    "g": 62,
    "b": 154
  },
  "hsl": {
    "h": 224.16,
    "s": 68.306,
    "l": 35.882
  },
  "oklch": {
    "l": 0.40101,
    "c": 0.15533,
    "h": 265
  },
  "luminance": 0.0604
}

Semantic roles & 50–950 ramp

primary

#1D3E9A

secondary

#C2A451

accent

#BD3DEB

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090811

muted

#7B7B80

Preview Lab

Preview with #1D3E9A

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

Preview Lab → · Contrast checker → · Palette generator →