#1B4594#1B4594

#1B4594 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.0% C 0.139 H 261.5°. Best body text is #FFFFFF at 9.03:1 contrast (WCAG AA passes).

Color values

HEX	#1B4594
RGB	rgb(27, 69, 148)
HSL	hsl(219, 69%, 34%)
HSV	hsv(219, 82%, 58%)
CMYK	cmyk(81.8%, 53.4%, 0%, 42%)
CIE-LAB	lab(30.94, 16.09, -47.56)
CIE-LCH	lch(30.94, 50.21, 288.69°)
OKLab	oklab(41.01% -0.0204 -0.1371)
OKLCH	oklch(41.01% 0.139 261.5)
XYZ	xyz(7.9235, 6.6264, 28.8727)
Luminance	0.0663 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4594 #946A1B

analogous

#1B8294 #1B4594 #2E1B94

triadic

#1B4594 #941B45 #45941B

tetradic

#1B4594 #941B82 #946A1B #1B942E

square

#1B4594 #941B82 #946A1B #1B942E

split-complementary

#1B4594 #942E1B #82941B

monochromatic

#08152C #122D60 #1B4594 #245DC8 #4B7EDE

Accessibility & contrast

On white

9.03

#1B4594 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#1B4594 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4594

9.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4594	#FFFFFF	#000000	##FFFFFF
##1B4594	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)

#0C4F97

Deuteranopia (green-blind)

#004492

Tritanopia (blue-blind)

#005865

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1b4594;
/* rgb */ color: rgb(27, 69, 148);
/* oklch */ color: oklch(41.0% 0.139 261.5);

Tailwind

colors: {
  custom: {
    50: '#6c78b4',
    500: '#1b4594',
    950: '#000000',
  },
}

SCSS

$custom: #1b4594;
$custom-light: #6c78b4;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4594",
  "rgb": {
    "r": 27,
    "g": 69,
    "b": 148
  },
  "hsl": {
    "h": 219.174,
    "s": 69.143,
    "l": 34.314
  },
  "oklch": {
    "l": 0.41013,
    "c": 0.13857,
    "h": 261.5
  },
  "luminance": 0.06627
}

Semantic roles & 50–950 ramp

primary

#1B4594

secondary

#C0974B

accent

#AF3CEC

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1B4594

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

Preview Lab → · Contrast checker → · Palette generator →