#1B4BA7#1B4BA7

#1B4BA7 is a dark, vivid blue. Relative luminance 0.081; OKLCH L 43.9% C 0.157 H 261.7°. Best body text is #FFFFFF at 8.04:1 contrast (WCAG AA passes).

Color values

HEX	#1B4BA7
RGB	rgb(27, 75, 167)
HSL	hsl(219, 72%, 38%)
HSV	hsv(219, 84%, 65%)
CMYK	cmyk(83.8%, 55.1%, 0%, 34.5%)
CIE-LAB	lab(34.10, 19.65, -53.92)
CIE-LCH	lch(34.10, 57.39, 290.02°)
OKLab	oklab(43.86% -0.0226 -0.1556)
OKLCH	oklch(43.86% 0.157 261.7)
XYZ	xyz(9.9406, 8.0540, 37.5824)
Luminance	0.0805 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4BA7 #A7771B

analogous

#1B91A7 #1B4BA7 #311BA7

triadic

#1B4BA7 #A71B4B #4BA71B

tetradic

#1B4BA7 #A71B91 #A7771B #1BA731

square

#1B4BA7 #A71B91 #A7771B #1BA731

split-complementary

#1B4BA7 #A7311B #91A71B

monochromatic

#0A1C3E #123372 #1B4BA7 #2463DC #5888E4

Accessibility & contrast

On white

8.04

#1B4BA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.61

#1B4BA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4BA7

8.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4BA7	#FFFFFF	#000000	##FFFFFF
##1B4BA7	1.00	8.04	2.61	8.04
#FFFFFF	8.04	1.00	21.00	1.00
#000000	2.61	21.00	1.00	21.00
##FFFFFF	8.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057AA

Deuteranopia (green-blind)

#004AA5

Tritanopia (blue-blind)

#006271

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #1b4ba7;
/* rgb */ color: rgb(27, 75, 167);
/* oklch */ color: oklch(43.9% 0.157 261.7);

Tailwind

colors: {
  custom: {
    50: '#717cc2',
    500: '#1b4ba7',
    950: '#000000',
  },
}

SCSS

$custom: #1b4ba7;
$custom-light: #717cc2;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4ba7",
  "rgb": {
    "r": 27,
    "g": 75,
    "b": 167
  },
  "hsl": {
    "h": 219.429,
    "s": 72.165,
    "l": 38.039
  },
  "oklch": {
    "l": 0.43864,
    "c": 0.15729,
    "h": 261.7
  },
  "luminance": 0.08055
}

Semantic roles & 50–950 ramp

primary

#1B4BA7

secondary

#C8A156

accent

#B039EF

background

#F7F7FC

surface

#EDEEF8

border

#C8C9D1

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1B4BA7

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

Preview Lab → · Contrast checker → · Palette generator →