#1C3387#1C3387

#1C3387 is a dark, vivid blue. Relative luminance 0.044; OKLCH L 36.1% C 0.143 H 267.0°. Best body text is #FFFFFF at 11.21:1 contrast (WCAG AA passes).

Color values

HEX	#1C3387
RGB	rgb(28, 51, 135)
HSL	hsl(227, 66%, 32%)
HSV	hsv(227, 79%, 53%)
CMYK	cmyk(79.3%, 62.2%, 0%, 47.1%)
CIE-LAB	lab(24.84, 23.44, -49.46)
CIE-LCH	lch(24.84, 54.73, 295.36°)
OKLab	oklab(36.1% -0.0075 -0.1429)
OKLCH	oklch(36.1% 0.143 267)
XYZ	xyz(6.0344, 4.3631, 23.4411)
Luminance	0.0436 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3387 #87701C

analogous

#1C6987 #1C3387 #3B1C87

triadic

#1C3387 #871C33 #33871C

tetradic

#1C3387 #871C69 #87701C #1C873B

square

#1C3387 #871C69 #87701C #1C873B

split-complementary

#1C3387 #873B1C #69871C

monochromatic

#070D22 #112054 #1C3387 #2746BA #4565D8

Accessibility & contrast

On white

11.21

#1C3387 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#1C3387 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3387

11.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3387	#FFFFFF	#000000	##FFFFFF
##1C3387	1.00	11.21	1.87	11.21
#FFFFFF	11.21	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00408A

Deuteranopia (green-blind)

#003685

Tritanopia (blue-blind)

#004858

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1c3387;
/* rgb */ color: rgb(28, 51, 135);
/* oklch */ color: oklch(36.1% 0.143 267.0);

Tailwind

colors: {
  custom: {
    50: '#6b6aab',
    500: '#1c3387',
    950: '#000000',
  },
}

SCSS

$custom: #1c3387;
$custom-light: #6b6aab;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3387",
  "rgb": {
    "r": 28,
    "g": 51,
    "b": 135
  },
  "hsl": {
    "h": 227.103,
    "s": 65.644,
    "l": 31.961
  },
  "oklch": {
    "l": 0.36096,
    "c": 0.14314,
    "h": 267
  },
  "luminance": 0.04364
}

Semantic roles & 50–950 ramp

primary

#1C3387

secondary

#BAA145

accent

#C43FE9

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080610

muted

#7A7A7F

Preview Lab

Preview with #1C3387

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

Preview Lab → · Contrast checker → · Palette generator →