#1A3789#1A3789

#1A3789 is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.0% C 0.141 H 265.2°. Best body text is #FFFFFF at 10.76:1 contrast (WCAG AA passes).

Color values

HEX	#1A3789
RGB	rgb(26, 55, 137)
HSL	hsl(224, 68%, 32%)
HSV	hsv(224, 81%, 54%)
CMYK	cmyk(81%, 59.9%, 0%, 46.3%)
CIE-LAB	lab(26.03, 21.24, -48.76)
CIE-LCH	lch(26.03, 53.18, 293.54°)
OKLab	oklab(37.02% -0.0119 -0.1409)
OKLCH	oklch(37.02% 0.141 265.2)
XYZ	xyz(6.3060, 4.7574, 24.2480)
Luminance	0.0476 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3789 #896C1A

analogous

#1A6F89 #1A3789 #341A89

triadic

#1A3789 #891A37 #37891A

tetradic

#1A3789 #891A6F #896C1A #1A8934

square

#1A3789 #891A6F #896C1A #1A8934

split-complementary

#1A3789 #89341A #6F891A

monochromatic

#060E22 #102256 #1A3789 #244CBC #426ADB

Accessibility & contrast

On white

10.76

#1A3789 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#1A3789 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3789

10.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3789	#FFFFFF	#000000	##FFFFFF
##1A3789	1.00	10.76	1.95	10.76
#FFFFFF	10.76	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00438C

Deuteranopia (green-blind)

#003987

Tritanopia (blue-blind)

#004C5A

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #1a3789;
/* rgb */ color: rgb(26, 55, 137);
/* oklch */ color: oklch(37.0% 0.141 265.2);

Tailwind

colors: {
  custom: {
    50: '#6a6dac',
    500: '#1a3789',
    950: '#000000',
  },
}

SCSS

$custom: #1a3789;
$custom-light: #6a6dac;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3789",
  "rgb": {
    "r": 26,
    "g": 55,
    "b": 137
  },
  "hsl": {
    "h": 224.324,
    "s": 68.098,
    "l": 31.961
  },
  "oklch": {
    "l": 0.37018,
    "c": 0.14136,
    "h": 265.2
  },
  "luminance": 0.04758
}

Semantic roles & 50–950 ramp

primary

#1A3789

secondary

#BC9C43

accent

#BD3DEB

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #1A3789

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

Preview Lab → · Contrast checker → · Palette generator →