#1B448C#1B448C

#1B448C is a dark, vivid blue. Relative luminance 0.063; OKLCH L 40.2% C 0.129 H 260.7°. Best body text is #FFFFFF at 9.32:1 contrast (WCAG AA passes).

Color values

HEX	#1B448C
RGB	rgb(27, 68, 140)
HSL	hsl(218, 68%, 33%)
HSV	hsv(218, 81%, 55%)
CMYK	cmyk(80.7%, 51.4%, 0%, 45.1%)
CIE-LAB	lab(30.06, 13.53, -44.08)
CIE-LCH	lch(30.06, 46.11, 287.06°)
OKLab	oklab(40.15% -0.0207 -0.1268)
OKLCH	oklch(40.15% 0.129 260.7)
XYZ	xyz(7.2510, 6.2599, 25.6320)
Luminance	0.0626 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B448C #8C631B

analogous

#1B7C8C #1B448C #2A1B8C

triadic

#1B448C #8C1B44 #448C1B

tetradic

#1B448C #8C1B7C #8C631B #1B8C2A

square

#1B448C #8C1B7C #8C631B #1B8C2A

split-complementary

#1B448C #8C2A1B #7C8C1B

monochromatic

#071225 #112B59 #1B448C #255DBF #467CDB

Accessibility & contrast

On white

9.32

#1B448C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#1B448C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B448C

9.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B448C	#FFFFFF	#000000	##FFFFFF
##1B448C	1.00	9.32	2.25	9.32
#FFFFFF	9.32	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#174C8F

Deuteranopia (green-blind)

#00428B

Tritanopia (blue-blind)

#005561

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #1b448c;
/* rgb */ color: rgb(27, 68, 140);
/* oklch */ color: oklch(40.2% 0.129 260.7);

Tailwind

colors: {
  custom: {
    50: '#6a77ae',
    500: '#1b448c',
    950: '#000000',
  },
}

SCSS

$custom: #1b448c;
$custom-light: #6a77ae;
$custom-dark: #000000;

JSON

{
  "hex": "#1b448c",
  "rgb": {
    "r": 27,
    "g": 68,
    "b": 140
  },
  "hsl": {
    "h": 218.23,
    "s": 67.665,
    "l": 32.745
  },
  "oklch": {
    "l": 0.40152,
    "c": 0.12851,
    "h": 260.7
  },
  "luminance": 0.06261
}

Semantic roles & 50–950 ramp

primary

#1B448C

secondary

#BD9246

accent

#AC3DEB

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#080810

muted

#7A7B7F

Preview Lab

Preview with #1B448C

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

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