#1A3B83#1A3B83

#1A3B83 is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.4% C 0.128 H 263.1°. Best body text is #FFFFFF at 10.51:1 contrast (WCAG AA passes).

Color values

HEX	#1A3B83
RGB	rgb(26, 59, 131)
HSL	hsl(221, 67%, 31%)
HSV	hsv(221, 80%, 51%)
CMYK	cmyk(80.2%, 55%, 0%, 48.6%)
CIE-LAB	lab(26.69, 16.00, -43.95)
CIE-LCH	lch(26.69, 46.77, 290.01°)
OKLab	oklab(37.36% -0.0153 -0.1266)
OKLCH	oklch(37.36% 0.128 263.1)
XYZ	xyz(6.0852, 4.9855, 22.1099)
Luminance	0.0499 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3B83 #83621A

analogous

#1A6F83 #1A3B83 #2D1A83

triadic

#1A3B83 #831A3B #3B831A

tetradic

#1A3B83 #831A6F #83621A #1A832D

square

#1A3B83 #831A6F #83621A #1A832D

split-complementary

#1A3B83 #832D1A #6F831A

monochromatic

#060D1D #102450 #1A3B83 #2452B6 #3F6FD9

Accessibility & contrast

On white

10.51

#1A3B83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#1A3B83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3B83

10.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3B83	#FFFFFF	#000000	##FFFFFF
##1A3B83	1.00	10.51	2.00	10.51
#FFFFFF	10.51	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#044486

Deuteranopia (green-blind)

#003B82

Tritanopia (blue-blind)

#004D59

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #1a3b83;
/* rgb */ color: rgb(26, 59, 131);
/* oklch */ color: oklch(37.4% 0.128 263.1);

Tailwind

colors: {
  custom: {
    50: '#6870a8',
    500: '#1a3b83',
    950: '#000000',
  },
}

SCSS

$custom: #1a3b83;
$custom-light: #6870a8;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3b83",
  "rgb": {
    "r": 26,
    "g": 59,
    "b": 131
  },
  "hsl": {
    "h": 221.143,
    "s": 66.879,
    "l": 30.784
  },
  "oklch": {
    "l": 0.37365,
    "c": 0.12756,
    "h": 263.1
  },
  "luminance": 0.04986
}

Semantic roles & 50–950 ramp

primary

#1A3B83

secondary

#B79242

accent

#B43EEA

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #1A3B83

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

Preview Lab → · Contrast checker → · Palette generator →