#1B368A#1B368A

#1B368A is a dark, vivid blue. Relative luminance 0.047; OKLCH L 36.9% C 0.144 H 265.9°. Best body text is #FFFFFF at 10.82:1 contrast (WCAG AA passes).

Color values

HEX	#1B368A
RGB	rgb(27, 54, 138)
HSL	hsl(225, 67%, 32%)
HSV	hsv(225, 80%, 54%)
CMYK	cmyk(80.4%, 60.9%, 0%, 45.9%)
CIE-LAB	lab(25.88, 22.45, -49.63)
CIE-LCH	lch(25.88, 54.47, 294.34°)
OKLab	oklab(36.94% -0.0104 -0.1434)
OKLCH	oklch(36.94% 0.144 265.9)
XYZ	xyz(6.3570, 4.7056, 24.6131)
Luminance	0.0471 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B368A #8A6F1B

analogous

#1B6E8A #1B368A #371B8A

triadic

#1B368A #8A1B36 #368A1B

tetradic

#1B368A #8A1B6E #8A6F1B #1B8A37

square

#1B368A #8A1B6E #8A6F1B #1B8A37

split-complementary

#1B368A #8A371B #6E8A1B

monochromatic

#070E24 #112257 #1B368A #254ABD #4569DB

Accessibility & contrast

On white

10.82

#1B368A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#1B368A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B368A

10.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B368A	#FFFFFF	#000000	##FFFFFF
##1B368A	1.00	10.82	1.94	10.82
#FFFFFF	10.82	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00438D

Deuteranopia (green-blind)

#003888

Tritanopia (blue-blind)

#004B5A

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1b368a;
/* rgb */ color: rgb(27, 54, 138);
/* oklch */ color: oklch(36.9% 0.144 265.9);

Tailwind

colors: {
  custom: {
    50: '#6b6cad',
    500: '#1b368a',
    950: '#000000',
  },
}

SCSS

$custom: #1b368a;
$custom-light: #6b6cad;
$custom-dark: #000000;

JSON

{
  "hex": "#1b368a",
  "rgb": {
    "r": 27,
    "g": 54,
    "b": 138
  },
  "hsl": {
    "h": 225.405,
    "s": 67.273,
    "l": 32.353
  },
  "oklch": {
    "l": 0.36942,
    "c": 0.14379,
    "h": 265.9
  },
  "luminance": 0.04706
}

Semantic roles & 50–950 ramp

primary

#1B368A

secondary

#BC9F45

accent

#C03EEA

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #1B368A

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

Preview Lab → · Contrast checker → · Palette generator →