#1C43A8#1C43A8

#1C43A8 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.3% C 0.168 H 264.2°. Best body text is #FFFFFF at 8.69:1 contrast (WCAG AA passes).

Color values

HEX	#1C43A8
RGB	rgb(28, 67, 168)
HSL	hsl(223, 71%, 38%)
HSV	hsv(223, 83%, 66%)
CMYK	cmyk(83.3%, 60.1%, 0%, 34.1%)
CIE-LAB	lab(32.00, 25.54, -57.92)
CIE-LCH	lch(32.00, 63.31, 293.80°)
OKLab	oklab(42.32% -0.0169 -0.1675)
OKLCH	oklch(42.32% 0.168 264.2)
XYZ	xyz(9.5514, 7.0872, 37.9028)
Luminance	0.0709 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C43A8 #A8811C

analogous

#1C89A8 #1C43A8 #3B1CA8

triadic

#1C43A8 #A81C43 #43A81C

tetradic

#1C43A8 #A81C89 #A8811C #1CA83B

square

#1C43A8 #A81C89 #A8811C #1CA83B

split-complementary

#1C43A8 #A83B1C #89A81C

monochromatic

#0B193F #132E74 #1C43A8 #2659DB #5B81E4

Accessibility & contrast

On white

8.69

#1C43A8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#1C43A8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C43A8

8.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C43A8	#FFFFFF	#000000	##FFFFFF
##1C43A8	1.00	8.69	2.42	8.69
#FFFFFF	8.69	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052AB

Deuteranopia (green-blind)

#0045A6

Tritanopia (blue-blind)

#005D6F

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1c43a8;
/* rgb */ color: rgb(28, 67, 168);
/* oklch */ color: oklch(42.3% 0.168 264.2);

Tailwind

colors: {
  custom: {
    50: '#7276c3',
    500: '#1c43a8',
    950: '#000000',
  },
}

SCSS

$custom: #1c43a8;
$custom-light: #7276c3;
$custom-dark: #000000;

JSON

{
  "hex": "#1c43a8",
  "rgb": {
    "r": 28,
    "g": 67,
    "b": 168
  },
  "hsl": {
    "h": 223.286,
    "s": 71.429,
    "l": 38.431
  },
  "oklch": {
    "l": 0.42323,
    "c": 0.16839,
    "h": 264.2
  },
  "luminance": 0.07088
}

Semantic roles & 50–950 ramp

primary

#1C43A8

secondary

#C7A958

accent

#BC3AEE

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#090813

muted

#7B7B82

Preview Lab

Preview with #1C43A8

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

Preview Lab → · Contrast checker → · Palette generator →