#1B4AA7#1B4AA7

#1B4AA7 is a dark, vivid blue. Relative luminance 0.079; OKLCH L 43.7% C 0.159 H 262.0°. Best body text is #FFFFFF at 8.13:1 contrast (WCAG AA passes).

Color values

HEX	#1B4AA7
RGB	rgb(27, 74, 167)
HSL	hsl(220, 72%, 38%)
HSV	hsv(220, 84%, 65%)
CMYK	cmyk(83.8%, 55.7%, 0%, 34.5%)
CIE-LAB	lab(33.81, 20.32, -54.38)
CIE-LCH	lch(33.81, 58.05, 290.49°)
OKLab	oklab(43.65% -0.022 -0.157)
OKLCH	oklch(43.65% 0.159 262)
XYZ	xyz(9.8733, 7.9194, 37.5599)
Luminance	0.0792 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4AA7 #A7781B

analogous

#1B90A7 #1B4AA7 #321BA7

triadic

#1B4AA7 #A71B4A #4AA71B

tetradic

#1B4AA7 #A71B90 #A7781B #1BA732

square

#1B4AA7 #A71B90 #A7781B #1BA732

split-complementary

#1B4AA7 #A7321B #90A71B

monochromatic

#0A1B3E #123372 #1B4AA7 #2461DC #5887E4

Accessibility & contrast

On white

8.13

#1B4AA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.58

#1B4AA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4AA7

8.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4AA7	#FFFFFF	#000000	##FFFFFF
##1B4AA7	1.00	8.13	2.58	8.13
#FFFFFF	8.13	1.00	21.00	1.00
#000000	2.58	21.00	1.00	21.00
##FFFFFF	8.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056AA

Deuteranopia (green-blind)

#0049A5

Tritanopia (blue-blind)

#006171

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #1b4aa7;
/* rgb */ color: rgb(27, 74, 167);
/* oklch */ color: oklch(43.7% 0.159 262.0);

Tailwind

colors: {
  custom: {
    50: '#717bc2',
    500: '#1b4aa7',
    950: '#000000',
  },
}

SCSS

$custom: #1b4aa7;
$custom-light: #717bc2;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4aa7",
  "rgb": {
    "r": 27,
    "g": 74,
    "b": 167
  },
  "hsl": {
    "h": 219.857,
    "s": 72.165,
    "l": 38.039
  },
  "oklch": {
    "l": 0.43652,
    "c": 0.15854,
    "h": 262
  },
  "luminance": 0.07921
}

Semantic roles & 50–950 ramp

primary

#1B4AA7

secondary

#C8A256

accent

#B239EF

background

#F7F7FC

surface

#EDEDF8

border

#C8C8D1

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1B4AA7

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

Preview Lab → · Contrast checker → · Palette generator →