#1C45AD#1C45AD

#1C45AD is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.2% C 0.173 H 264.0°. Best body text is #FFFFFF at 8.39:1 contrast (WCAG AA passes).

Color values

HEX	#1C45AD
RGB	rgb(28, 69, 173)
HSL	hsl(223, 72%, 39%)
HSV	hsv(223, 84%, 68%)
CMYK	cmyk(83.8%, 60.1%, 0%, 32.2%)
CIE-LAB	lab(32.96, 26.16, -59.35)
CIE-LCH	lch(32.96, 64.86, 293.78°)
OKLab	oklab(43.17% -0.0179 -0.1717)
OKLCH	oklch(43.17% 0.173 264)
XYZ	xyz(10.1471, 7.5190, 40.4436)
Luminance	0.0752 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C45AD #AD841C

analogous

#1C8EAD #1C45AD #3B1CAD

triadic

#1C45AD #AD1C45 #45AD1C

tetradic

#1C45AD #AD1C8E #AD841C #1CAD3B

square

#1C45AD #AD1C8E #AD841C #1CAD3B

split-complementary

#1C45AD #AD3B1C #8EAD1C

monochromatic

#0B1B44 #133078 #1C45AD #2A5CDC #5E84E5

Accessibility & contrast

On white

8.39

#1C45AD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#1C45AD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C45AD

8.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C45AD	#FFFFFF	#000000	##FFFFFF
##1C45AD	1.00	8.39	2.50	8.39
#FFFFFF	8.39	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054B0

Deuteranopia (green-blind)

#0047AB

Tritanopia (blue-blind)

#006072

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1c45ad;
/* rgb */ color: rgb(28, 69, 173);
/* oklch */ color: oklch(43.2% 0.173 264.0);

Tailwind

colors: {
  custom: {
    50: '#7378c6',
    500: '#1c45ad',
    950: '#000000',
  },
}

SCSS

$custom: #1c45ad;
$custom-light: #7378c6;
$custom-dark: #000000;

JSON

{
  "hex": "#1c45ad",
  "rgb": {
    "r": 28,
    "g": 69,
    "b": 173
  },
  "hsl": {
    "h": 223.034,
    "s": 72.139,
    "l": 39.412
  },
  "oklch": {
    "l": 0.43169,
    "c": 0.17262,
    "h": 264
  },
  "luminance": 0.0752
}

Semantic roles & 50–950 ramp

primary

#1C45AD

secondary

#C9AA5C

accent

#BB39EF

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #1C45AD

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

Preview Lab → · Contrast checker → · Palette generator →