#1A3777#1A3777

#1A3777 is a dark, moderate blue. Relative luminance 0.043; OKLCH L 35.5% C 0.115 H 263.4°. Best body text is #FFFFFF at 11.31:1 contrast (WCAG AA passes).

Color values

HEX	#1A3777
RGB	rgb(26, 55, 119)
HSL	hsl(221, 64%, 28%)
HSV	hsv(221, 78%, 47%)
CMYK	cmyk(78.2%, 53.8%, 0%, 53.3%)
CIE-LAB	lab(24.59, 13.90, -39.80)
CIE-LCH	lch(24.59, 42.16, 289.25°)
OKLab	oklab(35.47% -0.0133 -0.1145)
OKLCH	oklch(35.47% 0.115 263.4)
XYZ	xyz(5.1208, 4.2833, 18.0061)
Luminance	0.0428 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3777 #775A1A

analogous

#1A6577 #1A3777 #2B1A77

triadic

#1A3777 #771A37 #37771A

tetradic

#1A3777 #771A65 #775A1A #1A772B

square

#1A3777 #771A65 #775A1A #1A772B

split-complementary

#1A3777 #772B1A #65771A

monochromatic

#050C19 #0F2045 #1A3777 #254EA9 #3868D3

Accessibility & contrast

On white

11.31

#1A3777 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#1A3777 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3777

11.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3777	#FFFFFF	#000000	##FFFFFF
##1A3777	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)

#0D3F79

Deuteranopia (green-blind)

#003676

Tritanopia (blue-blind)

#004651

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1a3777;
/* rgb */ color: rgb(26, 55, 119);
/* oklch */ color: oklch(35.5% 0.115 263.4);

Tailwind

colors: {
  custom: {
    50: '#656d9f',
    500: '#1a3777',
    950: '#000000',
  },
}

SCSS

$custom: #1a3777;
$custom-light: #656d9f;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3777",
  "rgb": {
    "r": 26,
    "g": 55,
    "b": 119
  },
  "hsl": {
    "h": 221.29,
    "s": 64.138,
    "l": 28.431
  },
  "oklch": {
    "l": 0.35472,
    "c": 0.1153,
    "h": 263.4
  },
  "luminance": 0.04284
}

Semantic roles & 50–950 ramp

primary

#1A3777

secondary

#AC8A41

accent

#B341E7

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #1A3777

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

Preview Lab → · Contrast checker → · Palette generator →