#1A3C83#1A3C83

#1A3C83 is a dark, vivid blue. Relative luminance 0.051; OKLCH L 37.6% C 0.126 H 262.7°. Best body text is #FFFFFF at 10.41:1 contrast (WCAG AA passes).

Color values

HEX	#1A3C83
RGB	rgb(26, 60, 131)
HSL	hsl(221, 67%, 31%)
HSV	hsv(221, 80%, 51%)
CMYK	cmyk(80.2%, 54.2%, 0%, 48.6%)
CIE-LAB	lab(26.99, 15.30, -43.47)
CIE-LCH	lch(26.99, 46.08, 289.39°)
OKLab	oklab(37.59% -0.0161 -0.1252)
OKLCH	oklch(37.59% 0.126 262.7)
XYZ	xyz(6.1371, 5.0893, 22.1272)
Luminance	0.0509 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3C83 #83611A

analogous

#1A7083 #1A3C83 #2C1A83

triadic

#1A3C83 #831A3C #3C831A

tetradic

#1A3C83 #831A70 #83611A #1A832C

square

#1A3C83 #831A70 #83611A #1A832C

split-complementary

#1A3C83 #832C1A #70831A

monochromatic

#060D1D #102550 #1A3C83 #2453B6 #3F71D9

Accessibility & contrast

On white

10.41

#1A3C83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#1A3C83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3C83

10.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3C83	#FFFFFF	#000000	##FFFFFF
##1A3C83	1.00	10.41	2.02	10.41
#FFFFFF	10.41	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#094586

Deuteranopia (green-blind)

#003B82

Tritanopia (blue-blind)

#004D59

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1a3c83;
/* rgb */ color: rgb(26, 60, 131);
/* oklch */ color: oklch(37.6% 0.126 262.7);

Tailwind

colors: {
  custom: {
    50: '#6871a8',
    500: '#1a3c83',
    950: '#000000',
  },
}

SCSS

$custom: #1a3c83;
$custom-light: #6871a8;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3c83",
  "rgb": {
    "r": 26,
    "g": 60,
    "b": 131
  },
  "hsl": {
    "h": 220.571,
    "s": 66.879,
    "l": 30.784
  },
  "oklch": {
    "l": 0.37588,
    "c": 0.12625,
    "h": 262.7
  },
  "luminance": 0.0509
}

Semantic roles & 50–950 ramp

primary

#1A3C83

secondary

#B79142

accent

#B23EEA

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #1A3C83

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

Preview Lab → · Contrast checker → · Palette generator →