#1A3A8D#1A3A8D

#1A3A8D is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.0% C 0.143 H 264.5°. Best body text is #FFFFFF at 10.33:1 contrast (WCAG AA passes).

Color values

HEX	#1A3A8D
RGB	rgb(26, 58, 141)
HSL	hsl(223, 69%, 33%)
HSV	hsv(223, 82%, 55%)
CMYK	cmyk(81.6%, 58.9%, 0%, 44.7%)
CIE-LAB	lab(27.21, 20.77, -49.32)
CIE-LCH	lch(27.21, 53.52, 292.83°)
OKLab	oklab(38.01% -0.0138 -0.1425)
OKLCH	oklch(38.01% 0.143 264.5)
XYZ	xyz(6.7451, 5.1680, 25.8362)
Luminance	0.0517 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3A8D #8D6D1A

analogous

#1A748D #1A3A8D #331A8D

triadic

#1A3A8D #8D1A3A #3A8D1A

tetradic

#1A3A8D #8D1A74 #8D6D1A #1A8D33

square

#1A3A8D #8D1A74 #8D6D1A #1A8D33

split-complementary

#1A3A8D #8D331A #748D1A

monochromatic

#070F26 #102559 #1A3A8D #244FC1 #456FDD

Accessibility & contrast

On white

10.33

#1A3A8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#1A3A8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3A8D

10.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3A8D	#FFFFFF	#000000	##FFFFFF
##1A3A8D	1.00	10.33	2.03	10.33
#FFFFFF	10.33	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004690

Deuteranopia (green-blind)

#003B8B

Tritanopia (blue-blind)

#004F5D

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1a3a8d;
/* rgb */ color: rgb(26, 58, 141);
/* oklch */ color: oklch(38.0% 0.143 264.5);

Tailwind

colors: {
  custom: {
    50: '#6b6faf',
    500: '#1a3a8d',
    950: '#000000',
  },
}

SCSS

$custom: #1a3a8d;
$custom-light: #6b6faf;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3a8d",
  "rgb": {
    "r": 26,
    "g": 58,
    "b": 141
  },
  "hsl": {
    "h": 223.304,
    "s": 68.862,
    "l": 32.745
  },
  "oklch": {
    "l": 0.38005,
    "c": 0.14313,
    "h": 264.5
  },
  "luminance": 0.05169
}

Semantic roles & 50–950 ramp

primary

#1A3A8D

secondary

#BE9C45

accent

#BB3CEC

background

#F6F6FA

surface

#ECECF5

border

#C7C7CF

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #1A3A8D

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

Preview Lab → · Contrast checker → · Palette generator →