#1B186B#1B186B

#1B186B is a dark, vivid blue. Relative luminance 0.019; OKLCH L 28.2% C 0.137 H 274.6°. Best body text is #FFFFFF at 15.11:1 contrast (WCAG AA passes).

Color values

HEX	#1B186B
RGB	rgb(27, 24, 107)
HSL	hsl(242, 63%, 26%)
HSV	hsv(242, 78%, 42%)
CMYK	cmyk(74.8%, 77.6%, 0%, 58%)
CIE-LAB	lab(15.21, 30.73, -47.38)
CIE-LCH	lch(15.21, 56.48, 302.97°)
OKLab	oklab(28.22% 0.0111 -0.137)
OKLCH	oklch(28.22% 0.137 274.6)
XYZ	xyz(3.4316, 1.9475, 14.1021)
Luminance	0.0195 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B186B #686B18

analogous

#183E6B #1B186B #44186B

triadic

#1B186B #6B1B18 #186B1B

tetradic

#1B186B #6B183E #686B18 #186B44

square

#1B186B #6B183E #686B18 #186B44

split-complementary

#1B186B #6B4418 #3E6B18

monochromatic

#060619 #0E0D39 #1B186B #28239D #342ECF

Accessibility & contrast

On white

15.11

#1B186B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.39

#1B186B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B186B

15.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B186B	#FFFFFF	#000000	##FFFFFF
##1B186B	1.00	15.11	1.39	15.11
#FFFFFF	15.11	1.00	21.00	1.00
#000000	1.39	21.00	1.00	21.00
##FFFFFF	15.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A6D

Deuteranopia (green-blind)

#00226A

Tritanopia (blue-blind)

#003040

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #1b186b;
/* rgb */ color: rgb(27, 24, 107);
/* oklch */ color: oklch(28.2% 0.137 274.6);

Tailwind

colors: {
  custom: {
    50: '#655696',
    500: '#1b186b',
    950: '#000000',
  },
}

SCSS

$custom: #1b186b;
$custom-light: #655696;
$custom-dark: #000000;

JSON

{
  "hex": "#1b186b",
  "rgb": {
    "r": 27,
    "g": 24,
    "b": 107
  },
  "hsl": {
    "h": 242.169,
    "s": 63.359,
    "l": 25.686
  },
  "oklch": {
    "l": 0.28219,
    "c": 0.13746,
    "h": 274.6
  },
  "luminance": 0.01948
}

Semantic roles & 50–950 ramp

primary

#1B186B

secondary

#9DA13E

accent

#E641E0

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06030D

muted

#7A787E

Preview Lab

Preview with #1B186B

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

Preview Lab → · Contrast checker → · Palette generator →