#1B368F#1B368F

#1B368F is a dark, vivid blue. Relative luminance 0.049; OKLCH L 37.4% C 0.151 H 266.1°. Best body text is #FFFFFF at 10.65:1 contrast (WCAG AA passes).

Color values

HEX	#1B368F
RGB	rgb(27, 54, 143)
HSL	hsl(226, 68%, 33%)
HSV	hsv(226, 81%, 56%)
CMYK	cmyk(81.1%, 62.2%, 0%, 43.9%)
CIE-LAB	lab(26.31, 24.44, -52.02)
CIE-LCH	lch(26.31, 57.47, 295.17°)
OKLab	oklab(37.4% -0.0103 -0.1504)
OKLCH	oklch(37.4% 0.151 266.1)
XYZ	xyz(6.7273, 4.8537, 26.5636)
Luminance	0.0486 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B368F #8F741B

analogous

#1B708F #1B368F #3A1B8F

triadic

#1B368F #8F1B36 #368F1B

tetradic

#1B368F #8F1B70 #8F741B #1B8F3A

square

#1B368F #8F1B70 #8F741B #1B8F3A

split-complementary

#1B368F #8F3A1B #708F1B

monochromatic

#080F28 #11235C #1B368F #2549C2 #486BDC

Accessibility & contrast

On white

10.65

#1B368F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#1B368F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B368F

10.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B368F	#FFFFFF	#000000	##FFFFFF
##1B368F	1.00	10.65	1.97	10.65
#FFFFFF	10.65	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004492

Deuteranopia (green-blind)

#00398D

Tritanopia (blue-blind)

#004D5D

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #1b368f;
/* rgb */ color: rgb(27, 54, 143);
/* oklch */ color: oklch(37.4% 0.151 266.1);

Tailwind

colors: {
  custom: {
    50: '#6c6cb1',
    500: '#1b368f',
    950: '#000000',
  },
}

SCSS

$custom: #1b368f;
$custom-light: #6c6cb1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b368f",
  "rgb": {
    "r": 27,
    "g": 54,
    "b": 143
  },
  "hsl": {
    "h": 226.034,
    "s": 68.235,
    "l": 33.333
  },
  "oklch": {
    "l": 0.37401,
    "c": 0.15076,
    "h": 266.1
  },
  "luminance": 0.04855
}

Semantic roles & 50–950 ramp

primary

#1B368F

secondary

#BEA348

accent

#C33DEB

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #1B368F

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

Preview Lab → · Contrast checker → · Palette generator →