#1A3C99#1A3C99

#1A3C99 is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.5% C 0.157 H 264.7°. Best body text is #FFFFFF at 9.77:1 contrast (WCAG AA passes).

Color values

HEX	#1A3C99
RGB	rgb(26, 60, 153)
HSL	hsl(224, 71%, 35%)
HSV	hsv(224, 83%, 60%)
CMYK	cmyk(83%, 60.8%, 0%, 40%)
CIE-LAB	lab(28.77, 24.20, -54.14)
CIE-LCH	lch(28.77, 59.30, 294.08°)
OKLab	oklab(39.49% -0.0146 -0.1566)
OKLCH	oklch(39.49% 0.157 264.7)
XYZ	xyz(7.7896, 5.7503, 30.8302)
Luminance	0.0575 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3C99 #99771A

analogous

#1A7C99 #1A3C99 #371A99

triadic

#1A3C99 #991A3C #3C991A

tetradic

#1A3C99 #991A7C #99771A #1A9937

square

#1A3C99 #991A7C #99771A #1A9937

split-complementary

#1A3C99 #99371A #7C991A

monochromatic

#081330 #112765 #1A3C99 #2351CD #4D74E1

Accessibility & contrast

On white

9.77

#1A3C99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#1A3C99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3C99

9.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3C99	#FFFFFF	#000000	##FFFFFF
##1A3C99	1.00	9.77	2.15	9.77
#FFFFFF	9.77	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A9C

Deuteranopia (green-blind)

#003E97

Tritanopia (blue-blind)

#005464

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1a3c99;
/* rgb */ color: rgb(26, 60, 153);
/* oklch */ color: oklch(39.5% 0.157 264.7);

Tailwind

colors: {
  custom: {
    50: '#6e71b8',
    500: '#1a3c99',
    950: '#000000',
  },
}

SCSS

$custom: #1a3c99;
$custom-light: #6e71b8;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3c99",
  "rgb": {
    "r": 26,
    "g": 60,
    "b": 153
  },
  "hsl": {
    "h": 223.937,
    "s": 70.95,
    "l": 35.098
  },
  "oklch": {
    "l": 0.39494,
    "c": 0.15724,
    "h": 264.7
  },
  "luminance": 0.05751
}

Semantic roles & 50–950 ramp

primary

#1A3C99

secondary

#C3A34C

accent

#BE3AEE

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #1A3C99

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

Preview Lab → · Contrast checker → · Palette generator →