#1A3A99#1A3A99

#1A3A99 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 39.1% C 0.160 H 265.2°. Best body text is #FFFFFF at 9.96:1 contrast (WCAG AA passes).

Color values

HEX	#1A3A99
RGB	rgb(26, 58, 153)
HSL	hsl(225, 71%, 35%)
HSV	hsv(225, 83%, 60%)
CMYK	cmyk(83%, 62.1%, 0%, 40%)
CIE-LAB	lab(28.23, 25.56, -55.02)
CIE-LCH	lch(28.23, 60.67, 294.92°)
OKLab	oklab(39.09% -0.0134 -0.1592)
OKLCH	oklch(39.09% 0.16 265.2)
XYZ	xyz(7.6868, 5.5447, 30.7959)
Luminance	0.0555 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3A99 #99791A

analogous

#1A7999 #1A3A99 #3A1A99

triadic

#1A3A99 #991A3A #3A991A

tetradic

#1A3A99 #991A79 #99791A #1A993A

square

#1A3A99 #991A79 #99791A #1A993A

split-complementary

#1A3A99 #993A1A #79991A

monochromatic

#081230 #112665 #1A3A99 #234ECD #4D72E1

Accessibility & contrast

On white

9.96

#1A3A99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#1A3A99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3A99

9.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3A99	#FFFFFF	#000000	##FFFFFF
##1A3A99	1.00	9.96	2.11	9.96
#FFFFFF	9.96	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00499C

Deuteranopia (green-blind)

#003D97

Tritanopia (blue-blind)

#005364

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1a3a99;
/* rgb */ color: rgb(26, 58, 153);
/* oklch */ color: oklch(39.1% 0.160 265.2);

Tailwind

colors: {
  custom: {
    50: '#6e6fb8',
    500: '#1a3a99',
    950: '#000000',
  },
}

SCSS

$custom: #1a3a99;
$custom-light: #6e6fb8;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3a99",
  "rgb": {
    "r": 26,
    "g": 58,
    "b": 153
  },
  "hsl": {
    "h": 224.882,
    "s": 70.95,
    "l": 35.098
  },
  "oklch": {
    "l": 0.39091,
    "c": 0.15974,
    "h": 265.2
  },
  "luminance": 0.05546
}

Semantic roles & 50–950 ramp

primary

#1A3A99

secondary

#C3A54C

accent

#C03AEE

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #1A3A99

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

Preview Lab → · Contrast checker → · Palette generator →