#1D4CA1#1D4CA1

#1D4CA1 is a dark, vivid blue. Relative luminance 0.080; OKLCH L 43.7% C 0.147 H 261.1°. Best body text is #FFFFFF at 8.08:1 contrast (WCAG AA passes).

Color values

HEX	#1D4CA1
RGB	rgb(29, 76, 161)
HSL	hsl(219, 69%, 37%)
HSV	hsv(219, 82%, 63%)
CMYK	cmyk(82%, 52.8%, 0%, 36.9%)
CIE-LAB	lab(33.99, 16.76, -50.50)
CIE-LCH	lch(33.99, 53.20, 288.36°)
OKLab	oklab(43.66% -0.0228 -0.1455)
OKLCH	oklch(43.66% 0.147 261.1)
XYZ	xyz(9.5218, 8.0022, 34.7540)
Luminance	0.0800 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4CA1 #A1721D

analogous

#1D8EA1 #1D4CA1 #301DA1

triadic

#1D4CA1 #A11D4C #4CA11D

tetradic

#1D4CA1 #A11D8E #A1721D #1DA130

square

#1D4CA1 #A11D8E #A1721D #1DA130

split-complementary

#1D4CA1 #A1301D #8EA11D

monochromatic

#0A1B39 #14346D #1D4CA1 #2664D5 #5888E1

Accessibility & contrast

On white

8.08

#1D4CA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.60

#1D4CA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4CA1

8.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4CA1	#FFFFFF	#000000	##FFFFFF
##1D4CA1	1.00	8.08	2.60	8.08
#FFFFFF	8.08	1.00	21.00	1.00
#000000	2.60	21.00	1.00	21.00
##FFFFFF	8.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F56A4

Deuteranopia (green-blind)

#004A9F

Tritanopia (blue-blind)

#00616F

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #1d4ca1;
/* rgb */ color: rgb(29, 76, 161);
/* oklch */ color: oklch(43.7% 0.147 261.1);

Tailwind

colors: {
  custom: {
    50: '#707dbd',
    500: '#1d4ca1',
    950: '#000000',
  },
}

SCSS

$custom: #1d4ca1;
$custom-light: #707dbd;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4ca1",
  "rgb": {
    "r": 29,
    "g": 76,
    "b": 161
  },
  "hsl": {
    "h": 218.636,
    "s": 69.474,
    "l": 37.255
  },
  "oklch": {
    "l": 0.43657,
    "c": 0.1473,
    "h": 261.1
  },
  "luminance": 0.08003
}

Semantic roles & 50–950 ramp

primary

#1D4CA1

secondary

#C49D55

accent

#AD3CEC

background

#F7F7FB

surface

#EDEEF7

border

#C8C9D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1D4CA1

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

Preview Lab → · Contrast checker → · Palette generator →