#1A3F85#1A3F85

#1A3F85 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 38.4% C 0.125 H 261.6°. Best body text is #FFFFFF at 10.03:1 contrast (WCAG AA passes).

Color values

HEX	#1A3F85
RGB	rgb(26, 63, 133)
HSL	hsl(219, 67%, 31%)
HSV	hsv(219, 80%, 52%)
CMYK	cmyk(80.5%, 52.6%, 0%, 47.8%)
CIE-LAB	lab(28.03, 14.02, -43.03)
CIE-LCH	lch(28.03, 45.26, 288.05°)
OKLab	oklab(38.43% -0.0183 -0.1239)
OKLCH	oklch(38.43% 0.125 261.6)
XYZ	xyz(6.4356, 5.4673, 22.9019)
Luminance	0.0547 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3F85 #85601A

analogous

#1A7485 #1A3F85 #2A1A85

triadic

#1A3F85 #851A3F #3F851A

tetradic

#1A3F85 #851A74 #85601A #1A852A

square

#1A3F85 #851A74 #85601A #1A852A

split-complementary

#1A3F85 #852A1A #74851A

monochromatic

#060F1F #102752 #1A3F85 #2457B8 #4075DA

Accessibility & contrast

On white

10.03

#1A3F85 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#1A3F85 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3F85

10.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3F85	#FFFFFF	#000000	##FFFFFF
##1A3F85	1.00	10.03	2.09	10.03
#FFFFFF	10.03	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#124788

Deuteranopia (green-blind)

#003E84

Tritanopia (blue-blind)

#00505B

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1a3f85;
/* rgb */ color: rgb(26, 63, 133);
/* oklch */ color: oklch(38.4% 0.125 261.6);

Tailwind

colors: {
  custom: {
    50: '#6973a9',
    500: '#1a3f85',
    950: '#000000',
  },
}

SCSS

$custom: #1a3f85;
$custom-light: #6973a9;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3f85",
  "rgb": {
    "r": 26,
    "g": 63,
    "b": 133
  },
  "hsl": {
    "h": 219.252,
    "s": 67.296,
    "l": 31.176
  },
  "oklch": {
    "l": 0.38427,
    "c": 0.12522,
    "h": 261.6
  },
  "luminance": 0.05468
}

Semantic roles & 50–950 ramp

primary

#1A3F85

secondary

#B89042

accent

#AF3EEA

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#070810

muted

#7A7B7F

Preview Lab

Preview with #1A3F85

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

Preview Lab → · Contrast checker → · Palette generator →