#1A3873#1A3873

#1A3873 is a dark, moderate blue. Relative luminance 0.043; OKLCH L 35.4% C 0.108 H 262.1°. Best body text is #FFFFFF at 11.31:1 contrast (WCAG AA passes).

Color values

HEX	#1A3873
RGB	rgb(26, 56, 115)
HSL	hsl(220, 63%, 28%)
HSV	hsv(220, 77%, 45%)
CMYK	cmyk(77.4%, 51.3%, 0%, 54.9%)
CIE-LAB	lab(24.59, 11.55, -37.25)
CIE-LCH	lch(24.59, 39.00, 287.22°)
OKLab	oklab(35.38% -0.0148 -0.107)
OKLCH	oklch(35.38% 0.108 262.1)
XYZ	xyz(4.9336, 4.2852, 16.7834)
Luminance	0.0429 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3873 #73551A

analogous

#1A6573 #1A3873 #281A73

triadic

#1A3873 #731A38 #38731A

tetradic

#1A3873 #731A65 #73551A #1A7328

square

#1A3873 #731A65 #73551A #1A7328

split-complementary

#1A3873 #73281A #65731A

monochromatic

#060C19 #0F2041 #1A3873 #2550A5 #366AD2

Accessibility & contrast

On white

11.31

#1A3873 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#1A3873 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3873

11.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3873	#FFFFFF	#000000	##FFFFFF
##1A3873	1.00	11.31	1.86	11.31
#FFFFFF	11.31	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#163F75

Deuteranopia (green-blind)

#003772

Tritanopia (blue-blind)

#004650

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1a3873;
/* rgb */ color: rgb(26, 56, 115);
/* oklch */ color: oklch(35.4% 0.108 262.1);

Tailwind

colors: {
  custom: {
    50: '#646e9c',
    500: '#1a3873',
    950: '#000000',
  },
}

SCSS

$custom: #1a3873;
$custom-light: #646e9c;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3873",
  "rgb": {
    "r": 26,
    "g": 56,
    "b": 115
  },
  "hsl": {
    "h": 219.775,
    "s": 63.121,
    "l": 27.647
  },
  "oklch": {
    "l": 0.35382,
    "c": 0.108,
    "h": 262.1
  },
  "luminance": 0.04286
}

Semantic roles & 50–950 ramp

primary

#1A3873

secondary

#A88541

accent

#AF42E6

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #1A3873

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

Preview Lab → · Contrast checker → · Palette generator →