#1C43A1#1C43A1

#1C43A1 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 41.7% C 0.159 H 263.8°. Best body text is #FFFFFF at 8.87:1 contrast (WCAG AA passes).

Color values

HEX	#1C43A1
RGB	rgb(28, 67, 161)
HSL	hsl(222, 70%, 37%)
HSV	hsv(222, 83%, 63%)
CMYK	cmyk(82.6%, 58.4%, 0%, 36.9%)
CIE-LAB	lab(31.42, 22.78, -54.66)
CIE-LCH	lch(31.42, 59.22, 292.62°)
OKLab	oklab(41.71% -0.0172 -0.158)
OKLCH	oklch(41.71% 0.159 263.8)
XYZ	xyz(8.9168, 6.8333, 34.5603)
Luminance	0.0683 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C43A1 #A17A1C

analogous

#1C86A1 #1C43A1 #381CA1

triadic

#1C43A1 #A11C43 #43A11C

tetradic

#1C43A1 #A11C86 #A17A1C #1CA138

square

#1C43A1 #A11C86 #A17A1C #1CA138

split-complementary

#1C43A1 #A1381C #86A11C

monochromatic

#0A1839 #132D6D #1C43A1 #2559D5 #567FE2

Accessibility & contrast

On white

8.87

#1C43A1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#1C43A1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C43A1

8.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C43A1	#FFFFFF	#000000	##FFFFFF
##1C43A1	1.00	8.87	2.37	8.87
#FFFFFF	8.87	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050A4

Deuteranopia (green-blind)

#00449F

Tritanopia (blue-blind)

#005B6B

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1c43a1;
/* rgb */ color: rgb(28, 67, 161);
/* oklch */ color: oklch(41.7% 0.159 263.8);

Tailwind

colors: {
  custom: {
    50: '#7076be',
    500: '#1c43a1',
    950: '#000000',
  },
}

SCSS

$custom: #1c43a1;
$custom-light: #7076be;
$custom-dark: #000000;

JSON

{
  "hex": "#1c43a1",
  "rgb": {
    "r": 28,
    "g": 67,
    "b": 161
  },
  "hsl": {
    "h": 222.406,
    "s": 70.37,
    "l": 37.059
  },
  "oklch": {
    "l": 0.41708,
    "c": 0.1589,
    "h": 263.8
  },
  "luminance": 0.06834
}

Semantic roles & 50–950 ramp

primary

#1C43A1

secondary

#C5A454

accent

#B93BED

background

#F7F7FB

surface

#EDEDF7

border

#C8C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1C43A1

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

Preview Lab → · Contrast checker → · Palette generator →