#1B4099#1B4099

#1B4099 is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.4% C 0.152 H 263.8°. Best body text is #FFFFFF at 9.38:1 contrast (WCAG AA passes).

Color values

HEX	#1B4099
RGB	rgb(27, 64, 153)
HSL	hsl(222, 70%, 35%)
HSV	hsv(222, 82%, 60%)
CMYK	cmyk(82.4%, 58.2%, 0%, 40%)
CIE-LAB	lab(29.91, 21.54, -52.28)
CIE-LCH	lch(29.91, 56.55, 292.39°)
OKLab	oklab(40.35% -0.0164 -0.151)
OKLCH	oklch(40.35% 0.152 263.8)
XYZ	xyz(8.0331, 6.1987, 30.9039)
Luminance	0.0620 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4099 #99741B

analogous

#1B7F99 #1B4099 #351B99

triadic

#1B4099 #991B40 #40991B

tetradic

#1B4099 #991B7F #99741B #1B9935

square

#1B4099 #991B7F #99741B #1B9935

split-complementary

#1B4099 #99351B #7F991B

monochromatic

#091431 #122A65 #1B4099 #2456CD #4F79E0

Accessibility & contrast

On white

9.38

#1B4099 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#1B4099 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4099

9.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4099	#FFFFFF	#000000	##FFFFFF
##1B4099	1.00	9.38	2.24	9.38
#FFFFFF	9.38	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004C9C

Deuteranopia (green-blind)

#004197

Tritanopia (blue-blind)

#005666

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1b4099;
/* rgb */ color: rgb(27, 64, 153);
/* oklch */ color: oklch(40.4% 0.152 263.8);

Tailwind

colors: {
  custom: {
    50: '#6e74b8',
    500: '#1b4099',
    950: '#000000',
  },
}

SCSS

$custom: #1b4099;
$custom-light: #6e74b8;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4099",
  "rgb": {
    "r": 27,
    "g": 64,
    "b": 153
  },
  "hsl": {
    "h": 222.381,
    "s": 70,
    "l": 35.294
  },
  "oklch": {
    "l": 0.40354,
    "c": 0.15193,
    "h": 263.8
  },
  "luminance": 0.062
}

Semantic roles & 50–950 ramp

primary

#1B4099

secondary

#C2A04E

accent

#B93BED

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1B4099

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

Preview Lab → · Contrast checker → · Palette generator →