#1B4397#1B4397

#1B4397 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 40.8% C 0.145 H 262.6°. Best body text is #FFFFFF at 9.14:1 contrast (WCAG AA passes).

Color values

HEX	#1B4397
RGB	rgb(27, 67, 151)
HSL	hsl(221, 70%, 35%)
HSV	hsv(221, 82%, 59%)
CMYK	cmyk(82.1%, 55.6%, 0%, 40.8%)
CIE-LAB	lab(30.59, 18.68, -49.95)
CIE-LCH	lch(30.59, 53.33, 290.50°)
OKLab	oklab(40.82% -0.0186 -0.1441)
OKLCH	oklch(40.82% 0.145 262.6)
XYZ	xyz(8.0431, 6.4807, 30.0992)
Luminance	0.0648 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4397 #976F1B

analogous

#1B8197 #1B4397 #311B97

triadic

#1B4397 #971B43 #43971B

tetradic

#1B4397 #971B81 #976F1B #1B9731

square

#1B4397 #971B81 #976F1B #1B9731

split-complementary

#1B4397 #97311B #81971B

monochromatic

#08152F #122C63 #1B4397 #245ACB #4D7CDF

Accessibility & contrast

On white

9.14

#1B4397 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#1B4397 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4397

9.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4397	#FFFFFF	#000000	##FFFFFF
##1B4397	1.00	9.14	2.30	9.14
#FFFFFF	9.14	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004E9A

Deuteranopia (green-blind)

#004395

Tritanopia (blue-blind)

#005866

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1b4397;
/* rgb */ color: rgb(27, 67, 151);
/* oklch */ color: oklch(40.8% 0.145 262.6);

Tailwind

colors: {
  custom: {
    50: '#6d76b6',
    500: '#1b4397',
    950: '#000000',
  },
}

SCSS

$custom: #1b4397;
$custom-light: #6d76b6;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4397",
  "rgb": {
    "r": 27,
    "g": 67,
    "b": 151
  },
  "hsl": {
    "h": 220.645,
    "s": 69.663,
    "l": 34.902
  },
  "oklch": {
    "l": 0.40822,
    "c": 0.14533,
    "h": 262.6
  },
  "luminance": 0.06482
}

Semantic roles & 50–950 ramp

primary

#1B4397

secondary

#C19C4C

accent

#B33BEC

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1B4397

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

Preview Lab → · Contrast checker → · Palette generator →