#1B4890#1B4890

#1B4890 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 41.4% C 0.129 H 259.6°. Best body text is #FFFFFF at 8.84:1 contrast (WCAG AA passes).

Color values

HEX	#1B4890
RGB	rgb(27, 72, 144)
HSL	hsl(217, 68%, 34%)
HSV	hsv(217, 81%, 56%)
CMYK	cmyk(81.3%, 50%, 0%, 43.5%)
CIE-LAB	lab(31.53, 12.41, -44.16)
CIE-LCH	lch(31.53, 45.87, 285.70°)
OKLab	oklab(41.37% -0.0233 -0.127)
OKLCH	oklch(41.37% 0.129 259.6)
XYZ	xyz(7.8016, 6.8804, 27.2970)
Luminance	0.0688 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4890 #90631B

analogous

#1B8290 #1B4890 #281B90

triadic

#1B4890 #901B48 #48901B

tetradic

#1B4890 #901B82 #90631B #1B9028

square

#1B4890 #901B82 #90631B #1B9028

split-complementary

#1B4890 #90281B #82901B

monochromatic

#081429 #112E5C #1B4890 #2562C4 #4982DD

Accessibility & contrast

On white

8.84

#1B4890 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.38

#1B4890 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4890

8.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4890	#FFFFFF	#000000	##FFFFFF
##1B4890	1.00	8.84	2.38	8.84
#FFFFFF	8.84	1.00	21.00	1.00
#000000	2.38	21.00	1.00	21.00
##FFFFFF	8.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E5093

Deuteranopia (green-blind)

#00458F

Tritanopia (blue-blind)

#005965

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1b4890;
/* rgb */ color: rgb(27, 72, 144);
/* oklch */ color: oklch(41.4% 0.129 259.6);

Tailwind

colors: {
  custom: {
    50: '#6b7ab1',
    500: '#1b4890',
    950: '#000000',
  },
}

SCSS

$custom: #1b4890;
$custom-light: #6b7ab1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4890",
  "rgb": {
    "r": 27,
    "g": 72,
    "b": 144
  },
  "hsl": {
    "h": 216.923,
    "s": 68.421,
    "l": 33.529
  },
  "oklch": {
    "l": 0.41373,
    "c": 0.1291,
    "h": 259.6
  },
  "luminance": 0.06881
}

Semantic roles & 50–950 ramp

primary

#1B4890

secondary

#BF9148

accent

#A83DEB

background

#F6F7FA

surface

#ECEDF5

border

#C7C8CF

text

#080911

muted

#7A7B80

Preview Lab

Preview with #1B4890

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

Preview Lab → · Contrast checker → · Palette generator →