#1B448E#1B448E

#1B448E is a dark, vivid blue. Relative luminance 0.063; OKLCH L 40.3% C 0.131 H 261.1°. Best body text is #FFFFFF at 9.28:1 contrast (WCAG AA passes).

Color values

HEX	#1B448E
RGB	rgb(27, 68, 142)
HSL	hsl(219, 68%, 33%)
HSV	hsv(219, 81%, 56%)
CMYK	cmyk(81%, 52.1%, 0%, 44.3%)
CIE-LAB	lab(30.20, 14.34, -45.07)
CIE-LCH	lch(30.20, 47.30, 287.65°)
OKLab	oklab(40.31% -0.0204 -0.1298)
OKLCH	oklch(40.31% 0.131 261.1)
XYZ	xyz(7.3998, 6.3194, 26.4157)
Luminance	0.0632 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B448E #8E651B

analogous

#1B7D8E #1B448E #2C1B8E

triadic

#1B448E #8E1B44 #448E1B

tetradic

#1B448E #8E1B7D #8E651B #1B8E2C

square

#1B448E #8E1B7D #8E651B #1B8E2C

split-complementary

#1B448E #8E2C1B #7D8E1B

monochromatic

#071327 #112B5B #1B448E #255DC1 #477CDC

Accessibility & contrast

On white

9.28

#1B448E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#1B448E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B448E

9.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B448E	#FFFFFF	#000000	##FFFFFF
##1B448E	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)

#144D91

Deuteranopia (green-blind)

#00428D

Tritanopia (blue-blind)

#005662

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #1b448e;
/* rgb */ color: rgb(27, 68, 142);
/* oklch */ color: oklch(40.3% 0.131 261.1);

Tailwind

colors: {
  custom: {
    50: '#6b77b0',
    500: '#1b448e',
    950: '#000000',
  },
}

SCSS

$custom: #1b448e;
$custom-light: #6b77b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1b448e",
  "rgb": {
    "r": 27,
    "g": 68,
    "b": 142
  },
  "hsl": {
    "h": 218.609,
    "s": 68.047,
    "l": 33.137
  },
  "oklch": {
    "l": 0.4031,
    "c": 0.13136,
    "h": 261.1
  },
  "luminance": 0.0632
}

Semantic roles & 50–950 ramp

primary

#1B448E

secondary

#BE9347

accent

#AD3DEB

background

#F6F7FA

surface

#ECEDF5

border

#C7C8CF

text

#080810

muted

#7A7B7F

Preview Lab

Preview with #1B448E

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

Preview Lab → · Contrast checker → · Palette generator →