#1B386E#1B386E

#1B386E is a dark, moderate blue. Relative luminance 0.042; OKLCH L 35.0% C 0.100 H 261.5°. Best body text is #FFFFFF at 11.43:1 contrast (WCAG AA passes).

Color values

HEX	#1B386E
RGB	rgb(27, 56, 110)
HSL	hsl(219, 61%, 27%)
HSV	hsv(219, 75%, 43%)
CMYK	cmyk(75.5%, 49.1%, 0%, 56.9%)
CIE-LAB	lab(24.28, 9.64, -34.55)
CIE-LCH	lch(24.28, 35.87, 285.59°)
OKLab	oklab(35.04% -0.0148 -0.099)
OKLCH	oklch(35.04% 0.1 261.5)
XYZ	xyz(4.6796, 4.1866, 15.3103)
Luminance	0.0419 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B386E #6E511B

analogous

#1B626E #1B386E #281B6E

triadic

#1B386E #6E1B38 #386E1B

tetradic

#1B386E #6E1B62 #6E511B #1B6E28

square

#1B386E #6E1B62 #6E511B #1B6E28

split-complementary

#1B386E #6E281B #626E1B

monochromatic

#060D19 #0F1F3D #1B386E #27519F #366BCE

Accessibility & contrast

On white

11.43

#1B386E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#1B386E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B386E

11.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B386E	#FFFFFF	#000000	##FFFFFF
##1B386E	1.00	11.43	1.84	11.43
#FFFFFF	11.43	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C3E70

Deuteranopia (green-blind)

#08366D

Tritanopia (blue-blind)

#00454D

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1b386e;
/* rgb */ color: rgb(27, 56, 110);
/* oklch */ color: oklch(35.0% 0.100 261.5);

Tailwind

colors: {
  custom: {
    50: '#636e98',
    500: '#1b386e',
    950: '#000000',
  },
}

SCSS

$custom: #1b386e;
$custom-light: #636e98;
$custom-dark: #000000;

JSON

{
  "hex": "#1b386e",
  "rgb": {
    "r": 27,
    "g": 56,
    "b": 110
  },
  "hsl": {
    "h": 219.036,
    "s": 60.584,
    "l": 26.863
  },
  "oklch": {
    "l": 0.35039,
    "c": 0.10014,
    "h": 261.5
  },
  "luminance": 0.04187
}

Semantic roles & 50–950 ramp

primary

#1B386E

secondary

#A38142

accent

#AC44E4

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #1B386E

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

Preview Lab → · Contrast checker → · Palette generator →