#1B368D#1B368D

#1B368D is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.2% C 0.148 H 266.0°. Best body text is #FFFFFF at 10.72:1 contrast (WCAG AA passes).

Color values

HEX	#1B368D
RGB	rgb(27, 54, 141)
HSL	hsl(226, 68%, 33%)
HSV	hsv(226, 81%, 55%)
CMYK	cmyk(80.9%, 61.7%, 0%, 44.7%)
CIE-LAB	lab(26.14, 23.64, -51.06)
CIE-LCH	lch(26.14, 56.27, 294.84°)
OKLab	oklab(37.22% -0.0103 -0.1476)
OKLCH	oklch(37.22% 0.148 266)
XYZ	xyz(6.5772, 4.7937, 25.7728)
Luminance	0.0479 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B368D #8D721B

analogous

#1B6F8D #1B368D #391B8D

triadic

#1B368D #8D1B36 #368D1B

tetradic

#1B368D #8D1B6F #8D721B #1B8D39

square

#1B368D #8D1B6F #8D721B #1B8D39

split-complementary

#1B368D #8D391B #6F8D1B

monochromatic

#070F26 #11225A #1B368D #254AC0 #476ADC

Accessibility & contrast

On white

10.72

#1B368D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#1B368D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B368D

10.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B368D	#FFFFFF	#000000	##FFFFFF
##1B368D	1.00	10.72	1.96	10.72
#FFFFFF	10.72	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004390

Deuteranopia (green-blind)

#00398B

Tritanopia (blue-blind)

#004C5C

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #1b368d;
/* rgb */ color: rgb(27, 54, 141);
/* oklch */ color: oklch(37.2% 0.148 266.0);

Tailwind

colors: {
  custom: {
    50: '#6c6caf',
    500: '#1b368d',
    950: '#000000',
  },
}

SCSS

$custom: #1b368d;
$custom-light: #6c6caf;
$custom-dark: #000000;

JSON

{
  "hex": "#1b368d",
  "rgb": {
    "r": 27,
    "g": 54,
    "b": 141
  },
  "hsl": {
    "h": 225.789,
    "s": 67.857,
    "l": 32.941
  },
  "oklch": {
    "l": 0.37216,
    "c": 0.14799,
    "h": 266
  },
  "luminance": 0.04794
}

Semantic roles & 50–950 ramp

primary

#1B368D

secondary

#BDA146

accent

#C23DEB

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #1B368D

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

Preview Lab → · Contrast checker → · Palette generator →