#1B4690#1B4690

#1B4690 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 40.9% C 0.132 H 260.5°. Best body text is #FFFFFF at 9.03:1 contrast (WCAG AA passes).

Color values

HEX	#1B4690
RGB	rgb(27, 70, 144)
HSL	hsl(218, 68%, 34%)
HSV	hsv(218, 81%, 56%)
CMYK	cmyk(81.3%, 51.4%, 0%, 43.5%)
CIE-LAB	lab(30.94, 13.78, -45.11)
CIE-LCH	lch(30.94, 47.17, 286.99°)
OKLab	oklab(40.92% -0.0217 -0.1298)
OKLCH	oklch(40.92% 0.132 260.5)
XYZ	xyz(7.6744, 6.6260, 27.2546)
Luminance	0.0663 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4690 #90651B

analogous

#1B8090 #1B4690 #2B1B90

triadic

#1B4690 #901B46 #46901B

tetradic

#1B4690 #901B80 #90651B #1B902B

square

#1B4690 #901B80 #90651B #1B902B

split-complementary

#1B4690 #902B1B #80901B

monochromatic

#081429 #112D5C #1B4690 #255FC4 #497FDD

Accessibility & contrast

On white

9.03

#1B4690 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#1B4690 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4690

9.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4690	#FFFFFF	#000000	##FFFFFF
##1B4690	1.00	9.03	2.33	9.03
#FFFFFF	9.03	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#184E93

Deuteranopia (green-blind)

#00448F

Tritanopia (blue-blind)

#005864

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1b4690;
/* rgb */ color: rgb(27, 70, 144);
/* oklch */ color: oklch(40.9% 0.132 260.5);

Tailwind

colors: {
  custom: {
    50: '#6b78b1',
    500: '#1b4690',
    950: '#000000',
  },
}

SCSS

$custom: #1b4690;
$custom-light: #6b78b1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4690",
  "rgb": {
    "r": 27,
    "g": 70,
    "b": 144
  },
  "hsl": {
    "h": 217.949,
    "s": 68.421,
    "l": 33.529
  },
  "oklch": {
    "l": 0.40919,
    "c": 0.13164,
    "h": 260.5
  },
  "luminance": 0.06627
}

Semantic roles & 50–950 ramp

primary

#1B4690

secondary

#BF9348

accent

#AB3DEB

background

#F6F7FB

surface

#ECEDF6

border

#C7C8D0

text

#080911

muted

#7A7B80

Preview Lab

Preview with #1B4690

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

Preview Lab → · Contrast checker → · Palette generator →