#1B4790#1B4790

#1B4790 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 41.1% C 0.130 H 260.1°. Best body text is #FFFFFF at 8.93:1 contrast (WCAG AA passes).

Color values

HEX	#1B4790
RGB	rgb(27, 71, 144)
HSL	hsl(217, 68%, 34%)
HSV	hsv(217, 81%, 56%)
CMYK	cmyk(81.3%, 50.7%, 0%, 43.5%)
CIE-LAB	lab(31.24, 13.09, -44.64)
CIE-LCH	lch(31.24, 46.52, 286.35°)
OKLab	oklab(41.15% -0.0225 -0.1284)
OKLCH	oklch(41.15% 0.13 260.1)
XYZ	xyz(7.7374, 6.7522, 27.2757)
Luminance	0.0675 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4790 #90641B

analogous

#1B8190 #1B4790 #291B90

triadic

#1B4790 #901B47 #47901B

tetradic

#1B4790 #901B81 #90641B #1B9029

square

#1B4790 #901B81 #90641B #1B9029

split-complementary

#1B4790 #90291B #81901B

monochromatic

#081429 #112E5C #1B4790 #2560C4 #4980DD

Accessibility & contrast

On white

8.93

#1B4790 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#1B4790 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4790

8.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4790	#FFFFFF	#000000	##FFFFFF
##1B4790	1.00	8.93	2.35	8.93
#FFFFFF	8.93	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B4F93

Deuteranopia (green-blind)

#00458F

Tritanopia (blue-blind)

#005964

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1b4790;
/* rgb */ color: rgb(27, 71, 144);
/* oklch */ color: oklch(41.1% 0.130 260.1);

Tailwind

colors: {
  custom: {
    50: '#6b79b1',
    500: '#1b4790',
    950: '#000000',
  },
}

SCSS

$custom: #1b4790;
$custom-light: #6b79b1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4790",
  "rgb": {
    "r": 27,
    "g": 71,
    "b": 144
  },
  "hsl": {
    "h": 217.436,
    "s": 68.421,
    "l": 33.529
  },
  "oklch": {
    "l": 0.41145,
    "c": 0.13037,
    "h": 260.1
  },
  "luminance": 0.06753
}

Semantic roles & 50–950 ramp

primary

#1B4790

secondary

#BF9248

accent

#AA3DEB

background

#F6F7FB

surface

#ECEDF6

border

#C7C8D0

text

#080911

muted

#7A7B80

Preview Lab

Preview with #1B4790

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

Preview Lab → · Contrast checker → · Palette generator →