#1B4199#1B4199

#1B4199 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 40.6% C 0.151 H 263.5°. Best body text is #FFFFFF at 9.28:1 contrast (WCAG AA passes).

Color values

HEX	#1B4199
RGB	rgb(27, 65, 153)
HSL	hsl(222, 70%, 35%)
HSV	hsv(222, 82%, 60%)
CMYK	cmyk(82.4%, 57.5%, 0%, 40%)
CIE-LAB	lab(30.19, 20.86, -51.83)
CIE-LCH	lch(30.19, 55.87, 291.92°)
OKLab	oklab(40.57% -0.0171 -0.1497)
OKLCH	oklch(40.57% 0.151 263.5)
XYZ	xyz(8.0900, 6.3125, 30.9229)
Luminance	0.0631 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4199 #99731B

analogous

#1B8099 #1B4199 #341B99

triadic

#1B4199 #991B41 #41991B

tetradic

#1B4199 #991B80 #99731B #1B9934

square

#1B4199 #991B80 #99731B #1B9934

split-complementary

#1B4199 #99341B #80991B

monochromatic

#091531 #122B65 #1B4199 #2457CD #4F7AE0

Accessibility & contrast

On white

9.28

#1B4199 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#1B4199 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4199

9.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4199	#FFFFFF	#000000	##FFFFFF
##1B4199	1.00	9.28	2.26	9.28
#FFFFFF	9.28	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004D9C

Deuteranopia (green-blind)

#004297

Tritanopia (blue-blind)

#005766

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #1b4199;
/* rgb */ color: rgb(27, 65, 153);
/* oklch */ color: oklch(40.6% 0.151 263.5);

Tailwind

colors: {
  custom: {
    50: '#6e75b8',
    500: '#1b4199',
    950: '#000000',
  },
}

SCSS

$custom: #1b4199;
$custom-light: #6e75b8;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4199",
  "rgb": {
    "r": 27,
    "g": 65,
    "b": 153
  },
  "hsl": {
    "h": 221.905,
    "s": 70,
    "l": 35.294
  },
  "oklch": {
    "l": 0.40565,
    "c": 0.15066,
    "h": 263.5
  },
  "luminance": 0.06314
}

Semantic roles & 50–950 ramp

primary

#1B4199

secondary

#C29F4E

accent

#B73BED

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1B4199

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

Preview Lab → · Contrast checker → · Palette generator →