#1B4398#1B4398

#1B4398 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 40.9% C 0.147 H 262.7°. Best body text is #FFFFFF at 9.12:1 contrast (WCAG AA passes).

Color values

HEX	#1B4398
RGB	rgb(27, 67, 152)
HSL	hsl(221, 70%, 35%)
HSV	hsv(221, 82%, 60%)
CMYK	cmyk(82.2%, 55.9%, 0%, 40.4%)
CIE-LAB	lab(30.67, 19.08, -50.43)
CIE-LCH	lch(30.67, 53.92, 290.72°)
OKLab	oklab(40.91% -0.0185 -0.1456)
OKLCH	oklch(40.91% 0.147 262.7)
XYZ	xyz(8.1246, 6.5133, 30.5287)
Luminance	0.0651 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4398 #98701B

analogous

#1B8198 #1B4398 #321B98

triadic

#1B4398 #981B43 #43981B

tetradic

#1B4398 #981B81 #98701B #1B9832

square

#1B4398 #981B81 #98701B #1B9832

split-complementary

#1B4398 #98321B #81981B

monochromatic

#091530 #122C64 #1B4398 #245ACC #4E7CE0

Accessibility & contrast

On white

9.12

#1B4398 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#1B4398 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4398

9.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4398	#FFFFFF	#000000	##FFFFFF
##1B4398	1.00	9.12	2.30	9.12
#FFFFFF	9.12	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004E9B

Deuteranopia (green-blind)

#004396

Tritanopia (blue-blind)

#005867

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1b4398;
/* rgb */ color: rgb(27, 67, 152);
/* oklch */ color: oklch(40.9% 0.147 262.7);

Tailwind

colors: {
  custom: {
    50: '#6e76b7',
    500: '#1b4398',
    950: '#000000',
  },
}

SCSS

$custom: #1b4398;
$custom-light: #6e76b7;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4398",
  "rgb": {
    "r": 27,
    "g": 67,
    "b": 152
  },
  "hsl": {
    "h": 220.8,
    "s": 69.832,
    "l": 35.098
  },
  "oklch": {
    "l": 0.40906,
    "c": 0.14673,
    "h": 262.7
  },
  "luminance": 0.06514
}

Semantic roles & 50–950 ramp

primary

#1B4398

secondary

#C29C4D

accent

#B43BED

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1B4398

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

Preview Lab → · Contrast checker → · Palette generator →