#1C2789#1C2789

#1C2789 is a dark, vivid blue. Relative luminance 0.035; OKLCH L 34.0% C 0.161 H 269.8°. Best body text is #FFFFFF at 12.35:1 contrast (WCAG AA passes).

Color values

HEX	#1C2789
RGB	rgb(28, 39, 137)
HSL	hsl(234, 66%, 32%)
HSV	hsv(234, 80%, 54%)
CMYK	cmyk(79.6%, 71.5%, 0%, 46.3%)
CIE-LAB	lab(21.96, 32.31, -55.43)
CIE-LCH	lch(21.96, 64.16, 300.24°)
OKLab	oklab(34.04% -0.0005 -0.1605)
OKLCH	oklch(34.04% 0.161 269.8)
XYZ	xyz(5.7182, 3.5034, 24.0369)
Luminance	0.0350 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C2789 #897E1C

analogous

#1C5E89 #1C2789 #481C89

triadic

#1C2789 #891C27 #27891C

tetradic

#1C2789 #891C5E #897E1C #1C8948

square

#1C2789 #891C5E #897E1C #1C8948

split-complementary

#1C2789 #89481C #5E891C

monochromatic

#070A23 #121956 #1C2789 #2635BC #4655D9

Accessibility & contrast

On white

12.35

#1C2789 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#1C2789 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C2789

12.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C2789	#FFFFFF	#000000	##FFFFFF
##1C2789	1.00	12.35	1.70	12.35
#FFFFFF	12.35	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A8C

Deuteranopia (green-blind)

#002F87

Tritanopia (blue-blind)

#004255

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1c2789;
/* rgb */ color: rgb(28, 39, 137);
/* oklch */ color: oklch(34.0% 0.161 269.8);

Tailwind

colors: {
  custom: {
    50: '#6c61ac',
    500: '#1c2789',
    950: '#000000',
  },
}

SCSS

$custom: #1c2789;
$custom-light: #6c61ac;
$custom-dark: #000000;

JSON

{
  "hex": "#1c2789",
  "rgb": {
    "r": 28,
    "g": 39,
    "b": 137
  },
  "hsl": {
    "h": 233.945,
    "s": 66.061,
    "l": 32.353
  },
  "oklch": {
    "l": 0.34041,
    "c": 0.1605,
    "h": 269.8
  },
  "luminance": 0.03504
}

Semantic roles & 50–950 ramp

primary

#1C2789

secondary

#BBAF46

accent

#D83FE9

background

#F7F5FA

surface

#EDEAF4

border

#C8C6CE

text

#080510

muted

#7B797F

Preview Lab

Preview with #1C2789

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

Preview Lab → · Contrast checker → · Palette generator →