#1A3D83#1A3D83

#1A3D83 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 37.8% C 0.125 H 262.2°. Best body text is #FFFFFF at 10.30:1 contrast (WCAG AA passes).

Color values

HEX	#1A3D83
RGB	rgb(26, 61, 131)
HSL	hsl(220, 67%, 31%)
HSV	hsv(220, 80%, 51%)
CMYK	cmyk(80.2%, 53.4%, 0%, 48.6%)
CIE-LAB	lab(27.28, 14.60, -42.99)
CIE-LCH	lch(27.28, 45.40, 288.76°)
OKLab	oklab(37.81% -0.0169 -0.1238)
OKLCH	oklch(37.81% 0.125 262.2)
XYZ	xyz(6.1900, 5.1951, 22.1448)
Luminance	0.0520 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3D83 #83601A

analogous

#1A7183 #1A3D83 #2B1A83

triadic

#1A3D83 #831A3D #3D831A

tetradic

#1A3D83 #831A71 #83601A #1A832B

square

#1A3D83 #831A71 #83601A #1A832B

split-complementary

#1A3D83 #832B1A #71831A

monochromatic

#060D1D #102550 #1A3D83 #2455B6 #3F72D9

Accessibility & contrast

On white

10.30

#1A3D83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#1A3D83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3D83

10.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3D83	#FFFFFF	#000000	##FFFFFF
##1A3D83	1.00	10.30	2.04	10.30
#FFFFFF	10.30	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D4686

Deuteranopia (green-blind)

#003C82

Tritanopia (blue-blind)

#004E5A

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1a3d83;
/* rgb */ color: rgb(26, 61, 131);
/* oklch */ color: oklch(37.8% 0.125 262.2);

Tailwind

colors: {
  custom: {
    50: '#6871a8',
    500: '#1a3d83',
    950: '#000000',
  },
}

SCSS

$custom: #1a3d83;
$custom-light: #6871a8;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3d83",
  "rgb": {
    "r": 26,
    "g": 61,
    "b": 131
  },
  "hsl": {
    "h": 220,
    "s": 66.879,
    "l": 30.784
  },
  "oklch": {
    "l": 0.37813,
    "c": 0.12494,
    "h": 262.2
  },
  "luminance": 0.05196
}

Semantic roles & 50–950 ramp

primary

#1A3D83

secondary

#B79042

accent

#B13EEA

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #1A3D83

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

Preview Lab → · Contrast checker → · Palette generator →