#1C189F#1C189F

#1C189F is a dark, highly saturated blue. Relative luminance 0.034; OKLCH L 34.5% C 0.202 H 270.1°. Best body text is #FFFFFF at 12.50:1 contrast (WCAG AA passes).

Color values

HEX	#1C189F
RGB	rgb(28, 24, 159)
HSL	hsl(242, 74%, 36%)
HSV	hsv(242, 85%, 62%)
CMYK	cmyk(82.4%, 84.9%, 0%, 37.6%)
CIE-LAB	lab(21.59, 48.17, -69.64)
CIE-LCH	lch(21.59, 84.68, 304.67°)
OKLab	oklab(34.53% 0.0004 -0.2015)
OKLCH	oklch(34.53% 0.202 270.1)
XYZ	xyz(7.0614, 3.4025, 33.0788)
Luminance	0.0340 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C189F #9B9F18

analogous

#18579F #1C189F #5F189F

triadic

#1C189F #9F1C18 #189F1C

tetradic

#1C189F #9F1857 #9B9F18 #189F5F

square

#1C189F #9F1857 #9B9F18 #189F5F

split-complementary

#1C189F #9F5F18 #579F18

monochromatic

#090835 #13106A #1C189F #2520D4 #524DE4

Accessibility & contrast

On white

12.50

#1C189F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#1C189F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C189F

12.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C189F	#FFFFFF	#000000	##FFFFFF
##1C189F	1.00	12.50	1.68	12.50
#FFFFFF	12.50	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003AA3

Deuteranopia (green-blind)

#002D9D

Tritanopia (blue-blind)

#00455E

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1c189f;
/* rgb */ color: rgb(28, 24, 159);
/* oklch */ color: oklch(34.5% 0.202 270.1);

Tailwind

colors: {
  custom: {
    50: '#745abd',
    500: '#1c189f',
    950: '#000000',
  },
}

SCSS

$custom: #1c189f;
$custom-light: #745abd;
$custom-dark: #000000;

JSON

{
  "hex": "#1c189f",
  "rgb": {
    "r": 28,
    "g": 24,
    "b": 159
  },
  "hsl": {
    "h": 241.778,
    "s": 73.77,
    "l": 35.882
  },
  "oklch": {
    "l": 0.34525,
    "c": 0.20155,
    "h": 270.1
  },
  "luminance": 0.03403
}

Semantic roles & 50–950 ramp

primary

#1C189F

secondary

#C3C64D

accent

#F037EB

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #1C189F

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

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