#1B2683#1B2683

#1B2683 is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.2% C 0.154 H 269.9°. Best body text is #FFFFFF at 12.71:1 contrast (WCAG AA passes).

Color values

HEX	#1B2683
RGB	rgb(27, 38, 131)
HSL	hsl(234, 66%, 31%)
HSV	hsv(234, 79%, 51%)
CMYK	cmyk(79.4%, 71%, 0%, 48.6%)
CIE-LAB	lab(21.05, 30.62, -53.17)
CIE-LCH	lch(21.05, 61.35, 299.94°)
OKLab	oklab(33.18% -0.0003 -0.1539)
OKLCH	oklch(33.18% 0.154 269.9)
XYZ	xyz(5.2404, 3.2574, 21.8209)
Luminance	0.0326 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2683 #83781B

analogous

#1B5A83 #1B2683 #441B83

triadic

#1B2683 #831B26 #26831B

tetradic

#1B2683 #831B5A #83781B #1B8344

square

#1B2683 #831B5A #83781B #1B8344

split-complementary

#1B2683 #83441B #5A831B

monochromatic

#06091E #111750 #1B2683 #2535B6 #4151D8

Accessibility & contrast

On white

12.71

#1B2683 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#1B2683 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2683

12.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2683	#FFFFFF	#000000	##FFFFFF
##1B2683	1.00	12.71	1.65	12.71
#FFFFFF	12.71	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003886

Deuteranopia (green-blind)

#002E81

Tritanopia (blue-blind)

#004051

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1b2683;
/* rgb */ color: rgb(27, 38, 131);
/* oklch */ color: oklch(33.2% 0.154 269.9);

Tailwind

colors: {
  custom: {
    50: '#6a60a8',
    500: '#1b2683',
    950: '#000000',
  },
}

SCSS

$custom: #1b2683;
$custom-light: #6a60a8;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2683",
  "rgb": {
    "r": 27,
    "g": 38,
    "b": 131
  },
  "hsl": {
    "h": 233.654,
    "s": 65.823,
    "l": 30.98
  },
  "oklch": {
    "l": 0.33182,
    "c": 0.15392,
    "h": 269.9
  },
  "luminance": 0.03258
}

Semantic roles & 50–950 ramp

primary

#1B2683

secondary

#B6AA43

accent

#D73FE9

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#080510

muted

#7A797F

Preview Lab

Preview with #1B2683

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

Preview Lab → · Contrast checker → · Palette generator →