#1A3C84#1A3C84

#1A3C84 is a dark, vivid blue. Relative luminance 0.051; OKLCH L 37.7% C 0.128 H 262.8°. Best body text is #FFFFFF at 10.38:1 contrast (WCAG AA passes).

Color values

HEX	#1A3C84
RGB	rgb(26, 60, 132)
HSL	hsl(221, 67%, 31%)
HSV	hsv(221, 80%, 52%)
CMYK	cmyk(80.3%, 54.5%, 0%, 48.2%)
CIE-LAB	lab(27.06, 15.71, -43.97)
CIE-LCH	lch(27.06, 46.69, 289.66°)
OKLab	oklab(37.67% -0.016 -0.1267)
OKLCH	oklch(37.67% 0.128 262.8)
XYZ	xyz(6.2052, 5.1166, 22.4859)
Luminance	0.0512 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3C84 #84621A

analogous

#1A7184 #1A3C84 #2D1A84

triadic

#1A3C84 #841A3C #3C841A

tetradic

#1A3C84 #841A71 #84621A #1A842D

square

#1A3C84 #841A71 #84621A #1A842D

split-complementary

#1A3C84 #842D1A #71841A

monochromatic

#060E1E #102551 #1A3C84 #2453B7 #3F71D9

Accessibility & contrast

On white

10.38

#1A3C84 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#1A3C84 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3C84

10.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3C84	#FFFFFF	#000000	##FFFFFF
##1A3C84	1.00	10.38	2.02	10.38
#FFFFFF	10.38	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#064587

Deuteranopia (green-blind)

#003B83

Tritanopia (blue-blind)

#004E5A

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1a3c84;
/* rgb */ color: rgb(26, 60, 132);
/* oklch */ color: oklch(37.7% 0.128 262.8);

Tailwind

colors: {
  custom: {
    50: '#6871a8',
    500: '#1a3c84',
    950: '#000000',
  },
}

SCSS

$custom: #1a3c84;
$custom-light: #6871a8;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3c84",
  "rgb": {
    "r": 26,
    "g": 60,
    "b": 132
  },
  "hsl": {
    "h": 220.755,
    "s": 67.089,
    "l": 30.98
  },
  "oklch": {
    "l": 0.3767,
    "c": 0.1277,
    "h": 262.8
  },
  "luminance": 0.05117
}

Semantic roles & 50–950 ramp

primary

#1A3C84

secondary

#B89242

accent

#B33EEA

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #1A3C84

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

Preview Lab → · Contrast checker → · Palette generator →