#1B4490#1B4490

#1B4490 is a dark, vivid blue. Relative luminance 0.064; OKLCH L 40.5% C 0.134 H 261.4°. Best body text is #FFFFFF at 9.23:1 contrast (WCAG AA passes).

Color values

HEX	#1B4490
RGB	rgb(27, 68, 144)
HSL	hsl(219, 68%, 34%)
HSV	hsv(219, 81%, 56%)
CMYK	cmyk(81.3%, 52.8%, 0%, 43.5%)
CIE-LAB	lab(30.35, 15.16, -46.06)
CIE-LCH	lch(30.35, 48.49, 288.21°)
OKLab	oklab(40.47% -0.0201 -0.1327)
OKLCH	oklch(40.47% 0.134 261.4)
XYZ	xyz(7.5513, 6.3800, 27.2136)
Luminance	0.0638 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4490 #90671B

analogous

#1B7E90 #1B4490 #2C1B90

triadic

#1B4490 #901B44 #44901B

tetradic

#1B4490 #901B7E #90671B #1B902C

square

#1B4490 #901B7E #90671B #1B902C

split-complementary

#1B4490 #902C1B #7E901B

monochromatic

#081329 #112C5C #1B4490 #255CC4 #497DDD

Accessibility & contrast

On white

9.23

#1B4490 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#1B4490 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4490

9.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4490	#FFFFFF	#000000	##FFFFFF
##1B4490	1.00	9.23	2.28	9.23
#FFFFFF	9.23	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#104D93

Deuteranopia (green-blind)

#00428E

Tritanopia (blue-blind)

#005663

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #1b4490;
/* rgb */ color: rgb(27, 68, 144);
/* oklch */ color: oklch(40.5% 0.134 261.4);

Tailwind

colors: {
  custom: {
    50: '#6b77b1',
    500: '#1b4490',
    950: '#000000',
  },
}

SCSS

$custom: #1b4490;
$custom-light: #6b77b1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4490",
  "rgb": {
    "r": 27,
    "g": 68,
    "b": 144
  },
  "hsl": {
    "h": 218.974,
    "s": 68.421,
    "l": 33.529
  },
  "oklch": {
    "l": 0.40469,
    "c": 0.1342,
    "h": 261.4
  },
  "luminance": 0.06381
}

Semantic roles & 50–950 ramp

primary

#1B4490

secondary

#BF9548

accent

#AE3DEB

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1B4490

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

Preview Lab → · Contrast checker → · Palette generator →