#1B386F#1B386F

#1B386F is a dark, moderate blue. Relative luminance 0.042; OKLCH L 35.1% C 0.102 H 261.7°. Best body text is #FFFFFF at 11.40:1 contrast (WCAG AA passes).

Color values

HEX	#1B386F
RGB	rgb(27, 56, 111)
HSL	hsl(219, 61%, 27%)
HSV	hsv(219, 76%, 44%)
CMYK	cmyk(75.7%, 49.5%, 0%, 56.5%)
CIE-LAB	lab(24.35, 10.05, -35.08)
CIE-LCH	lch(24.35, 36.49, 285.99°)
OKLab	oklab(35.12% -0.0146 -0.1006)
OKLCH	oklch(35.12% 0.102 261.7)
XYZ	xyz(4.7344, 4.2085, 15.5987)
Luminance	0.0421 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B386F #6F521B

analogous

#1B626F #1B386F #281B6F

triadic

#1B386F #6F1B38 #386F1B

tetradic

#1B386F #6F1B62 #6F521B #1B6F28

square

#1B386F #6F1B62 #6F521B #1B6F28

split-complementary

#1B386F #6F281B #626F1B

monochromatic

#060C19 #0F1F3E #1B386F #2751A0 #366BCE

Accessibility & contrast

On white

11.40

#1B386F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#1B386F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B386F

11.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B386F	#FFFFFF	#000000	##FFFFFF
##1B386F	1.00	11.40	1.84	11.40
#FFFFFF	11.40	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B3E71

Deuteranopia (green-blind)

#06366E

Tritanopia (blue-blind)

#00454E

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1b386f;
/* rgb */ color: rgb(27, 56, 111);
/* oklch */ color: oklch(35.1% 0.102 261.7);

Tailwind

colors: {
  custom: {
    50: '#646e99',
    500: '#1b386f',
    950: '#000000',
  },
}

SCSS

$custom: #1b386f;
$custom-light: #646e99;
$custom-dark: #000000;

JSON

{
  "hex": "#1b386f",
  "rgb": {
    "r": 27,
    "g": 56,
    "b": 111
  },
  "hsl": {
    "h": 219.286,
    "s": 60.87,
    "l": 27.059
  },
  "oklch": {
    "l": 0.35115,
    "c": 0.10165,
    "h": 261.7
  },
  "luminance": 0.04209
}

Semantic roles & 50–950 ramp

primary

#1B386F

secondary

#A48242

accent

#AD44E4

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #1B386F

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

Preview Lab → · Contrast checker → · Palette generator →