#1A3773#1A3773

#1A3773 is a dark, moderate blue. Relative luminance 0.042; OKLCH L 35.1% C 0.109 H 262.7°. Best body text is #FFFFFF at 11.43:1 contrast (WCAG AA passes).

Color values

HEX	#1A3773
RGB	rgb(26, 55, 115)
HSL	hsl(220, 63%, 28%)
HSV	hsv(220, 77%, 45%)
CMYK	cmyk(77.4%, 52.2%, 0%, 54.9%)
CIE-LAB	lab(24.29, 12.25, -37.74)
CIE-LCH	lch(24.29, 39.68, 287.99°)
OKLab	oklab(35.15% -0.0139 -0.1085)
OKLCH	oklch(35.15% 0.109 262.7)
XYZ	xyz(4.8856, 4.1893, 16.7675)
Luminance	0.0419 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3773 #73561A

analogous

#1A6473 #1A3773 #291A73

triadic

#1A3773 #731A37 #37731A

tetradic

#1A3773 #731A64 #73561A #1A7329

square

#1A3773 #731A64 #73561A #1A7329

split-complementary

#1A3773 #73291A #64731A

monochromatic

#060C19 #0F1F41 #1A3773 #254FA5 #3669D2

Accessibility & contrast

On white

11.43

#1A3773 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#1A3773 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3773

11.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3773	#FFFFFF	#000000	##FFFFFF
##1A3773	1.00	11.43	1.84	11.43
#FFFFFF	11.43	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#133E75

Deuteranopia (green-blind)

#003672

Tritanopia (blue-blind)

#00454F

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1a3773;
/* rgb */ color: rgb(26, 55, 115);
/* oklch */ color: oklch(35.1% 0.109 262.7);

Tailwind

colors: {
  custom: {
    50: '#646d9c',
    500: '#1a3773',
    950: '#000000',
  },
}

SCSS

$custom: #1a3773;
$custom-light: #646d9c;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3773",
  "rgb": {
    "r": 26,
    "g": 55,
    "b": 115
  },
  "hsl": {
    "h": 220.449,
    "s": 63.121,
    "l": 27.647
  },
  "oklch": {
    "l": 0.35148,
    "c": 0.10934,
    "h": 262.7
  },
  "luminance": 0.0419
}

Semantic roles & 50–950 ramp

primary

#1A3773

secondary

#A88641

accent

#B142E6

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #1A3773

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

Preview Lab → · Contrast checker → · Palette generator →