#1B3086#1B3086

#1B3086 is a dark, vivid blue. Relative luminance 0.041; OKLCH L 35.4% C 0.146 H 267.5°. Best body text is #FFFFFF at 11.58:1 contrast (WCAG AA passes).

Color values

HEX	#1B3086
RGB	rgb(27, 48, 134)
HSL	hsl(228, 66%, 32%)
HSV	hsv(228, 80%, 53%)
CMYK	cmyk(79.9%, 64.2%, 0%, 47.5%)
CIE-LAB	lab(23.89, 25.01, -50.38)
CIE-LCH	lch(23.89, 56.25, 296.40°)
OKLab	oklab(35.36% -0.0064 -0.1457)
OKLCH	oklch(35.36% 0.146 267.5)
XYZ	xyz(5.8105, 4.0675, 23.0285)
Luminance	0.0407 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3086 #86711B

analogous

#1B6686 #1B3086 #3C1B86

triadic

#1B3086 #861B30 #30861B

tetradic

#1B3086 #861B66 #86711B #1B863C

square

#1B3086 #861B66 #86711B #1B863C

split-complementary

#1B3086 #863C1B #66861B

monochromatic

#060C20 #111E53 #1B3086 #2542B9 #4260D9

Accessibility & contrast

On white

11.58

#1B3086 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#1B3086 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3086

11.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3086	#FFFFFF	#000000	##FFFFFF
##1B3086	1.00	11.58	1.81	11.58
#FFFFFF	11.58	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E89

Deuteranopia (green-blind)

#003484

Tritanopia (blue-blind)

#004656

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1b3086;
/* rgb */ color: rgb(27, 48, 134);
/* oklch */ color: oklch(35.4% 0.146 267.5);

Tailwind

colors: {
  custom: {
    50: '#6a68aa',
    500: '#1b3086',
    950: '#000000',
  },
}

SCSS

$custom: #1b3086;
$custom-light: #6a68aa;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3086",
  "rgb": {
    "r": 27,
    "g": 48,
    "b": 134
  },
  "hsl": {
    "h": 228.224,
    "s": 66.46,
    "l": 31.569
  },
  "oklch": {
    "l": 0.35356,
    "c": 0.14584,
    "h": 267.5
  },
  "luminance": 0.04068
}

Semantic roles & 50–950 ramp

primary

#1B3086

secondary

#B9A244

accent

#C83EE9

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080610

muted

#7A7A7F

Preview Lab

Preview with #1B3086

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

Preview Lab → · Contrast checker → · Palette generator →