#1A3189#1A3189

#1A3189 is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.8% C 0.149 H 266.9°. Best body text is #FFFFFF at 11.39:1 contrast (WCAG AA passes).

Color values

HEX	#1A3189
RGB	rgb(26, 49, 137)
HSL	hsl(228, 68%, 32%)
HSV	hsv(228, 81%, 54%)
CMYK	cmyk(81%, 64.2%, 0%, 46.3%)
CIE-LAB	lab(24.39, 25.41, -51.44)
CIE-LCH	lch(24.39, 57.37, 296.29°)
OKLab	oklab(35.8% -0.008 -0.1488)
OKLCH	oklch(35.8% 0.149 266.9)
XYZ	xyz(6.0381, 4.2217, 24.1587)
Luminance	0.0422 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3189 #89721A

analogous

#1A6889 #1A3189 #3B1A89

triadic

#1A3189 #891A31 #31891A

tetradic

#1A3189 #891A68 #89721A #1A893B

square

#1A3189 #891A68 #89721A #1A893B

split-complementary

#1A3189 #893B1A #68891A

monochromatic

#060C22 #101F56 #1A3189 #2443BC #4262DB

Accessibility & contrast

On white

11.39

#1A3189 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#1A3189 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3189

11.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3189	#FFFFFF	#000000	##FFFFFF
##1A3189	1.00	11.39	1.84	11.39
#FFFFFF	11.39	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F8C

Deuteranopia (green-blind)

#003587

Tritanopia (blue-blind)

#004858

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1a3189;
/* rgb */ color: rgb(26, 49, 137);
/* oklch */ color: oklch(35.8% 0.149 266.9);

Tailwind

colors: {
  custom: {
    50: '#6b68ac',
    500: '#1a3189',
    950: '#000000',
  },
}

SCSS

$custom: #1a3189;
$custom-light: #6b68ac;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3189",
  "rgb": {
    "r": 26,
    "g": 49,
    "b": 137
  },
  "hsl": {
    "h": 227.568,
    "s": 68.098,
    "l": 31.961
  },
  "oklch": {
    "l": 0.35796,
    "c": 0.14902,
    "h": 266.9
  },
  "luminance": 0.04222
}

Semantic roles & 50–950 ramp

primary

#1A3189

secondary

#BCA343

accent

#C73DEB

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080610

muted

#7A7A7F

Preview Lab

Preview with #1A3189

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

Preview Lab → · Contrast checker → · Palette generator →