#1D3D9A#1D3D9A

#1D3D9A is a dark, vivid blue. Relative luminance 0.059; OKLCH L 39.9% C 0.157 H 265.3°. Best body text is #FFFFFF at 9.60:1 contrast (WCAG AA passes).

Color values

HEX	#1D3D9A
RGB	rgb(29, 61, 154)
HSL	hsl(225, 68%, 36%)
HSV	hsv(225, 81%, 60%)
CMYK	cmyk(81.2%, 60.4%, 0%, 39.6%)
CIE-LAB	lab(29.24, 24.19, -53.98)
CIE-LCH	lch(29.24, 59.16, 294.14°)
OKLab	oklab(39.9% -0.013 -0.156)
OKLCH	oklch(39.9% 0.157 265.3)
XYZ	xyz(8.0061, 5.9309, 31.2884)
Luminance	0.0593 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3D9A #9A7A1D

analogous

#1D7B9A #1D3D9A #3B1D9A

triadic

#1D3D9A #9A1D3D #3D9A1D

tetradic

#1D3D9A #9A1D7B #9A7A1D #1D9A3B

square

#1D3D9A #9A1D7B #9A7A1D #1D9A3B

split-complementary

#1D3D9A #9A3B1D #7B9A1D

monochromatic

#0A1433 #132966 #1D3D9A #2751CE #5377DF

Accessibility & contrast

On white

9.60

#1D3D9A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#1D3D9A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3D9A

9.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3D9A	#FFFFFF	#000000	##FFFFFF
##1D3D9A	1.00	9.60	2.19	9.60
#FFFFFF	9.60	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004B9D

Deuteranopia (green-blind)

#003F98

Tritanopia (blue-blind)

#005565

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #1d3d9a;
/* rgb */ color: rgb(29, 61, 154);
/* oklch */ color: oklch(39.9% 0.157 265.3);

Tailwind

colors: {
  custom: {
    50: '#6f72b9',
    500: '#1d3d9a',
    950: '#000000',
  },
}

SCSS

$custom: #1d3d9a;
$custom-light: #6f72b9;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3d9a",
  "rgb": {
    "r": 29,
    "g": 61,
    "b": 154
  },
  "hsl": {
    "h": 224.64,
    "s": 68.306,
    "l": 35.882
  },
  "oklch": {
    "l": 0.39897,
    "c": 0.15659,
    "h": 265.3
  },
  "luminance": 0.05932
}

Semantic roles & 50–950 ramp

primary

#1D3D9A

secondary

#C2A551

accent

#BE3DEB

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #1D3D9A

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

Preview Lab → · Contrast checker → · Palette generator →