#1A3C81#1A3C81

#1A3C81 is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.4% C 0.123 H 262.4°. Best body text is #FFFFFF at 10.46:1 contrast (WCAG AA passes).

Color values

HEX	#1A3C81
RGB	rgb(26, 60, 129)
HSL	hsl(220, 66%, 30%)
HSV	hsv(220, 80%, 51%)
CMYK	cmyk(79.8%, 53.5%, 0%, 49.4%)
CIE-LAB	lab(26.84, 14.48, -42.46)
CIE-LCH	lch(26.84, 44.87, 288.83°)
OKLab	oklab(37.42% -0.0163 -0.1223)
OKLCH	oklch(37.42% 0.123 262.4)
XYZ	xyz(6.0029, 5.0356, 21.4202)
Luminance	0.0504 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3C81 #815F1A

analogous

#1A6F81 #1A3C81 #2B1A81

triadic

#1A3C81 #811A3C #3C811A

tetradic

#1A3C81 #811A6F #815F1A #1A812B

square

#1A3C81 #811A6F #815F1A #1A812B

split-complementary

#1A3C81 #812B1A #6F811A

monochromatic

#050D1B #10244E #1A3C81 #2454B4 #3D70D8

Accessibility & contrast

On white

10.46

#1A3C81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#1A3C81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3C81

10.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3C81	#FFFFFF	#000000	##FFFFFF
##1A3C81	1.00	10.46	2.01	10.46
#FFFFFF	10.46	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D4483

Deuteranopia (green-blind)

#003B80

Tritanopia (blue-blind)

#004D58

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #1a3c81;
/* rgb */ color: rgb(26, 60, 129);
/* oklch */ color: oklch(37.4% 0.123 262.4);

Tailwind

colors: {
  custom: {
    50: '#6871a6',
    500: '#1a3c81',
    950: '#000000',
  },
}

SCSS

$custom: #1a3c81;
$custom-light: #6871a6;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3c81",
  "rgb": {
    "r": 26,
    "g": 60,
    "b": 129
  },
  "hsl": {
    "h": 220.194,
    "s": 66.452,
    "l": 30.392
  },
  "oklch": {
    "l": 0.37424,
    "c": 0.12335,
    "h": 262.4
  },
  "luminance": 0.05036
}

Semantic roles & 50–950 ramp

primary

#1A3C81

secondary

#B58F42

accent

#B13EE9

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #1A3C81

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

Preview Lab → · Contrast checker → · Palette generator →