#1B448D#1B448D

#1B448D is a dark, vivid blue. Relative luminance 0.063; OKLCH L 40.2% C 0.130 H 260.9°. Best body text is #FFFFFF at 9.30:1 contrast (WCAG AA passes).

Color values

HEX	#1B448D
RGB	rgb(27, 68, 141)
HSL	hsl(218, 68%, 33%)
HSV	hsv(218, 81%, 55%)
CMYK	cmyk(80.9%, 51.8%, 0%, 44.7%)
CIE-LAB	lab(30.13, 13.94, -44.58)
CIE-LCH	lch(30.13, 46.71, 287.36°)
OKLab	oklab(40.23% -0.0205 -0.1283)
OKLCH	oklch(40.23% 0.13 260.9)
XYZ	xyz(7.3251, 6.2895, 26.0221)
Luminance	0.0629 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B448D #8D641B

analogous

#1B7D8D #1B448D #2B1B8D

triadic

#1B448D #8D1B44 #448D1B

tetradic

#1B448D #8D1B7D #8D641B #1B8D2B

square

#1B448D #8D1B7D #8D641B #1B8D2B

split-complementary

#1B448D #8D2B1B #7D8D1B

monochromatic

#071226 #112B5A #1B448D #255DC0 #477CDC

Accessibility & contrast

On white

9.30

#1B448D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#1B448D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B448D

9.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B448D	#FFFFFF	#000000	##FFFFFF
##1B448D	1.00	9.30	2.26	9.30
#FFFFFF	9.30	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#164C90

Deuteranopia (green-blind)

#00428C

Tritanopia (blue-blind)

#005662

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #1b448d;
/* rgb */ color: rgb(27, 68, 141);
/* oklch */ color: oklch(40.2% 0.130 260.9);

Tailwind

colors: {
  custom: {
    50: '#6b77af',
    500: '#1b448d',
    950: '#000000',
  },
}

SCSS

$custom: #1b448d;
$custom-light: #6b77af;
$custom-dark: #000000;

JSON

{
  "hex": "#1b448d",
  "rgb": {
    "r": 27,
    "g": 68,
    "b": 141
  },
  "hsl": {
    "h": 218.421,
    "s": 67.857,
    "l": 32.941
  },
  "oklch": {
    "l": 0.40231,
    "c": 0.12994,
    "h": 260.9
  },
  "luminance": 0.0629
}

Semantic roles & 50–950 ramp

primary

#1B448D

secondary

#BD9346

accent

#AC3DEB

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#080810

muted

#7A7B7F

Preview Lab

Preview with #1B448D

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

Preview Lab → · Contrast checker → · Palette generator →