#1C3388#1C3388

#1C3388 is a dark, vivid blue. Relative luminance 0.044; OKLCH L 36.2% C 0.145 H 267.0°. Best body text is #FFFFFF at 11.18:1 contrast (WCAG AA passes).

Color values

HEX	#1C3388
RGB	rgb(28, 51, 136)
HSL	hsl(227, 66%, 32%)
HSV	hsv(227, 79%, 53%)
CMYK	cmyk(79.4%, 62.5%, 0%, 46.7%)
CIE-LAB	lab(24.93, 23.84, -49.94)
CIE-LCH	lch(24.93, 55.34, 295.52°)
OKLab	oklab(36.19% -0.0075 -0.1443)
OKLCH	oklch(36.19% 0.145 267)
XYZ	xyz(6.1051, 4.3914, 23.8136)
Luminance	0.0439 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3388 #88711C

analogous

#1C6988 #1C3388 #3B1C88

triadic

#1C3388 #881C33 #33881C

tetradic

#1C3388 #881C69 #88711C #1C883B

square

#1C3388 #881C69 #88711C #1C883B

split-complementary

#1C3388 #883B1C #69881C

monochromatic

#070D22 #122055 #1C3388 #2646BB #4665D9

Accessibility & contrast

On white

11.18

#1C3388 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#1C3388 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3388

11.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3388	#FFFFFF	#000000	##FFFFFF
##1C3388	1.00	11.18	1.88	11.18
#FFFFFF	11.18	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00408B

Deuteranopia (green-blind)

#003686

Tritanopia (blue-blind)

#004958

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1c3388;
/* rgb */ color: rgb(28, 51, 136);
/* oklch */ color: oklch(36.2% 0.145 267.0);

Tailwind

colors: {
  custom: {
    50: '#6b6aab',
    500: '#1c3388',
    950: '#000000',
  },
}

SCSS

$custom: #1c3388;
$custom-light: #6b6aab;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3388",
  "rgb": {
    "r": 28,
    "g": 51,
    "b": 136
  },
  "hsl": {
    "h": 227.222,
    "s": 65.854,
    "l": 32.157
  },
  "oklch": {
    "l": 0.36189,
    "c": 0.14455,
    "h": 267
  },
  "luminance": 0.04392
}

Semantic roles & 50–950 ramp

primary

#1C3388

secondary

#BAA245

accent

#C53FE9

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080610

muted

#7A7A7F

Preview Lab

Preview with #1C3388

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

Preview Lab → · Contrast checker → · Palette generator →