#1A3F8A#1A3F8A

#1A3F8A is a dark, vivid blue. Relative luminance 0.056; OKLCH L 38.8% C 0.132 H 262.3°. Best body text is #FFFFFF at 9.90:1 contrast (WCAG AA passes).

Color values

HEX	#1A3F8A
RGB	rgb(26, 63, 138)
HSL	hsl(220, 68%, 32%)
HSV	hsv(220, 81%, 54%)
CMYK	cmyk(81.2%, 54.3%, 0%, 45.9%)
CIE-LAB	lab(28.40, 16.07, -45.53)
CIE-LCH	lch(28.40, 48.28, 289.44°)
OKLab	oklab(38.83% -0.0177 -0.1312)
OKLCH	oklch(38.83% 0.132 262.3)
XYZ	xyz(6.7893, 5.6088, 24.7646)
Luminance	0.0561 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3F8A #8A651A

analogous

#1A778A #1A3F8A #2D1A8A

triadic

#1A3F8A #8A1A3F #3F8A1A

tetradic

#1A3F8A #8A1A77 #8A651A #1A8A2D

square

#1A3F8A #8A1A77 #8A651A #1A8A2D

split-complementary

#1A3F8A #8A2D1A #778A1A

monochromatic

#071023 #102757 #1A3F8A #2457BD #4375DC

Accessibility & contrast

On white

9.90

#1A3F8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#1A3F8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3F8A

9.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3F8A	#FFFFFF	#000000	##FFFFFF
##1A3F8A	1.00	9.90	2.12	9.90
#FFFFFF	9.90	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#06488D

Deuteranopia (green-blind)

#003E89

Tritanopia (blue-blind)

#00515E

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1a3f8a;
/* rgb */ color: rgb(26, 63, 138);
/* oklch */ color: oklch(38.8% 0.132 262.3);

Tailwind

colors: {
  custom: {
    50: '#6a73ad',
    500: '#1a3f8a',
    950: '#000000',
  },
}

SCSS

$custom: #1a3f8a;
$custom-light: #6a73ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3f8a",
  "rgb": {
    "r": 26,
    "g": 63,
    "b": 138
  },
  "hsl": {
    "h": 220.179,
    "s": 68.293,
    "l": 32.157
  },
  "oklch": {
    "l": 0.38833,
    "c": 0.13239,
    "h": 262.3
  },
  "luminance": 0.0561
}

Semantic roles & 50–950 ramp

primary

#1A3F8A

secondary

#BD9543

accent

#B23DEB

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#070810

muted

#7A7B7F

Preview Lab

Preview with #1A3F8A

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

Preview Lab → · Contrast checker → · Palette generator →