#1C2178#1C2178

#1C2178 is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.2% C 0.145 H 271.9°. Best body text is #FFFFFF at 13.65:1 contrast (WCAG AA passes).

Color values

HEX	#1C2178
RGB	rgb(28, 33, 120)
HSL	hsl(237, 62%, 29%)
HSV	hsv(237, 77%, 47%)
CMYK	cmyk(76.7%, 72.5%, 0%, 52.9%)
CIE-LAB	lab(18.76, 29.87, -49.95)
CIE-LCH	lch(18.76, 58.20, 300.89°)
OKLab	oklab(31.2% 0.0049 -0.1445)
OKLCH	oklch(31.2% 0.145 271.9)
XYZ	xyz(4.4118, 2.6902, 18.0524)
Luminance	0.0269 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C2178 #78731C

analogous

#1C4F78 #1C2178 #451C78

triadic

#1C2178 #781C21 #21781C

tetradic

#1C2178 #781C4F #78731C #1C7845

square

#1C2178 #781C4F #78731C #1C7845

split-complementary

#1C2178 #78451C #4F781C

monochromatic

#060719 #101346 #1C2178 #282FAA #3D45D2

Accessibility & contrast

On white

13.65

#1C2178 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#1C2178 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C2178

13.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C2178	#FFFFFF	#000000	##FFFFFF
##1C2178	1.00	13.65	1.54	13.65
#FFFFFF	13.65	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00327B

Deuteranopia (green-blind)

#002976

Tritanopia (blue-blind)

#00394A

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1c2178;
/* rgb */ color: rgb(28, 33, 120);
/* oklch */ color: oklch(31.2% 0.145 271.9);

Tailwind

colors: {
  custom: {
    50: '#685da0',
    500: '#1c2178',
    950: '#000000',
  },
}

SCSS

$custom: #1c2178;
$custom-light: #685da0;
$custom-dark: #000000;

JSON

{
  "hex": "#1c2178",
  "rgb": {
    "r": 28,
    "g": 33,
    "b": 120
  },
  "hsl": {
    "h": 236.739,
    "s": 62.162,
    "l": 29.02
  },
  "oklch": {
    "l": 0.31199,
    "c": 0.14458,
    "h": 271.9
  },
  "luminance": 0.02691
}

Semantic roles & 50–950 ramp

primary

#1C2178

secondary

#ACA644

accent

#DC43E5

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07040F

muted

#7A797E

Preview Lab

Preview with #1C2178

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

Preview Lab → · Contrast checker → · Palette generator →