#1B4089#1B4089

#1B4089 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.0% C 0.129 H 262.1°. Best body text is #FFFFFF at 9.81:1 contrast (WCAG AA passes).

Color values

HEX	#1B4089
RGB	rgb(27, 64, 137)
HSL	hsl(220, 67%, 32%)
HSV	hsv(220, 80%, 54%)
CMYK	cmyk(80.3%, 53.3%, 0%, 46.3%)
CIE-LAB	lab(28.66, 15.08, -44.50)
CIE-LCH	lch(28.66, 46.98, 288.72°)
OKLab	oklab(39.01% -0.0178 -0.1281)
OKLCH	oklch(39.01% 0.129 262.1)
XYZ	xyz(6.7991, 5.7052, 24.4049)
Luminance	0.0571 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4089 #89641B

analogous

#1B7789 #1B4089 #2D1B89

triadic

#1B4089 #891B40 #40891B

tetradic

#1B4089 #891B77 #89641B #1B892D

square

#1B4089 #891B77 #89641B #1B892D

split-complementary

#1B4089 #892D1B #77891B

monochromatic

#071023 #112856 #1B4089 #2558BC #4477DA

Accessibility & contrast

On white

9.81

#1B4089 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#1B4089 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4089

9.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4089	#FFFFFF	#000000	##FFFFFF
##1B4089	1.00	9.81	2.14	9.81
#FFFFFF	9.81	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E498C

Deuteranopia (green-blind)

#003F88

Tritanopia (blue-blind)

#00525E

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1b4089;
/* rgb */ color: rgb(27, 64, 137);
/* oklch */ color: oklch(39.0% 0.129 262.1);

Tailwind

colors: {
  custom: {
    50: '#6a74ac',
    500: '#1b4089',
    950: '#000000',
  },
}

SCSS

$custom: #1b4089;
$custom-light: #6a74ac;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4089",
  "rgb": {
    "r": 27,
    "g": 64,
    "b": 137
  },
  "hsl": {
    "h": 219.818,
    "s": 67.073,
    "l": 32.157
  },
  "oklch": {
    "l": 0.39012,
    "c": 0.12939,
    "h": 262.1
  },
  "luminance": 0.05706
}

Semantic roles & 50–950 ramp

primary

#1B4089

secondary

#BC9344

accent

#B03EEA

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#070810

muted

#7A7B7F

Preview Lab

Preview with #1B4089

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

Preview Lab → · Contrast checker → · Palette generator →