#1B4189#1B4189

#1B4189 is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.2% C 0.128 H 261.6°. Best body text is #FFFFFF at 9.70:1 contrast (WCAG AA passes).

Color values

HEX	#1B4189
RGB	rgb(27, 65, 137)
HSL	hsl(219, 67%, 32%)
HSV	hsv(219, 80%, 54%)
CMYK	cmyk(80.3%, 52.6%, 0%, 46.3%)
CIE-LAB	lab(28.95, 14.38, -44.02)
CIE-LCH	lch(28.95, 46.31, 288.09°)
OKLab	oklab(39.24% -0.0186 -0.1267)
OKLCH	oklch(39.24% 0.128 261.6)
XYZ	xyz(6.8560, 5.8189, 24.4239)
Luminance	0.0582 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4189 #89631B

analogous

#1B7889 #1B4189 #2C1B89

triadic

#1B4189 #891B41 #41891B

tetradic

#1B4189 #891B78 #89631B #1B892C

square

#1B4189 #891B78 #89631B #1B892C

split-complementary

#1B4189 #892C1B #78891B

monochromatic

#071023 #112956 #1B4189 #2559BC #4478DA

Accessibility & contrast

On white

9.70

#1B4189 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#1B4189 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4189

9.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4189	#FFFFFF	#000000	##FFFFFF
##1B4189	1.00	9.70	2.16	9.70
#FFFFFF	9.70	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#124A8C

Deuteranopia (green-blind)

#003F88

Tritanopia (blue-blind)

#00525E

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1b4189;
/* rgb */ color: rgb(27, 65, 137);
/* oklch */ color: oklch(39.2% 0.128 261.6);

Tailwind

colors: {
  custom: {
    50: '#6a75ac',
    500: '#1b4189',
    950: '#000000',
  },
}

SCSS

$custom: #1b4189;
$custom-light: #6a75ac;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4189",
  "rgb": {
    "r": 27,
    "g": 65,
    "b": 137
  },
  "hsl": {
    "h": 219.273,
    "s": 67.073,
    "l": 32.157
  },
  "oklch": {
    "l": 0.39236,
    "c": 0.12809,
    "h": 261.6
  },
  "luminance": 0.0582
}

Semantic roles & 50–950 ramp

primary

#1B4189

secondary

#BC9244

accent

#AF3EEA

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#070810

muted

#7A7B7F

Preview Lab

Preview with #1B4189

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

Preview Lab → · Contrast checker → · Palette generator →