#1B44B4#1B44B4

#1B44B4 is a dark, vivid blue. Relative luminance 0.077; OKLCH L 43.6% C 0.183 H 264.4°. Best body text is #FFFFFF at 8.29:1 contrast (WCAG AA passes).

Color values

HEX	#1B44B4
RGB	rgb(27, 68, 180)
HSL	hsl(224, 74%, 41%)
HSV	hsv(224, 85%, 71%)
CMYK	cmyk(85%, 62.2%, 0%, 29.4%)
CIE-LAB	lab(33.27, 29.48, -63.01)
CIE-LCH	lch(33.27, 69.57, 295.07°)
OKLab	oklab(43.58% -0.0178 -0.1824)
OKLCH	oklch(43.58% 0.183 264.4)
XYZ	xyz(10.7544, 7.6612, 44.0831)
Luminance	0.0766 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B44B4 #B48B1B

analogous

#1B90B4 #1B44B4 #3F1BB4

triadic

#1B44B4 #B41B44 #44B41B

tetradic

#1B44B4 #B41B90 #B48B1B #1BB43F

square

#1B44B4 #B41B90 #B48B1B #1BB43F

split-complementary

#1B44B4 #B43F1B #90B41B

monochromatic

#0B1C4A #13307F #1B44B4 #2D5DDF #6286E7

Accessibility & contrast

On white

8.29

#1B44B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#1B44B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B44B4

8.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B44B4	#FFFFFF	#000000	##FFFFFF
##1B44B4	1.00	8.29	2.53	8.29
#FFFFFF	8.29	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056B8

Deuteranopia (green-blind)

#0047B2

Tritanopia (blue-blind)

#006175

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1b44b4;
/* rgb */ color: rgb(27, 68, 180);
/* oklch */ color: oklch(43.6% 0.183 264.4);

Tailwind

colors: {
  custom: {
    50: '#7577cb',
    500: '#1b44b4',
    950: '#000000',
  },
}

SCSS

$custom: #1b44b4;
$custom-light: #7577cb;
$custom-dark: #000000;

JSON

{
  "hex": "#1b44b4",
  "rgb": {
    "r": 27,
    "g": 68,
    "b": 180
  },
  "hsl": {
    "h": 223.922,
    "s": 73.913,
    "l": 40.588
  },
  "oklch": {
    "l": 0.43575,
    "c": 0.18332,
    "h": 264.4
  },
  "luminance": 0.07663
}

Semantic roles & 50–950 ramp

primary

#1B44B4

secondary

#CCAF5F

accent

#BF37F1

background

#F7F7FC

surface

#EEEDF9

border

#C9C8D2

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #1B44B4

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

Preview Lab → · Contrast checker → · Palette generator →