#1C3384#1C3384

#1C3384 is a dark, vivid blue. Relative luminance 0.043; OKLCH L 35.8% C 0.139 H 266.9°. Best body text is #FFFFFF at 11.31:1 contrast (WCAG AA passes).

Color values

HEX	#1C3384
RGB	rgb(28, 51, 132)
HSL	hsl(227, 65%, 31%)
HSV	hsv(227, 79%, 52%)
CMYK	cmyk(78.8%, 61.4%, 0%, 48.2%)
CIE-LAB	lab(24.58, 22.25, -48.01)
CIE-LCH	lch(24.58, 52.92, 294.86°)
OKLab	oklab(35.82% -0.0076 -0.1387)
OKLCH	oklch(35.82% 0.139 266.9)
XYZ	xyz(5.8261, 4.2798, 22.3444)
Luminance	0.0428 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3384 #846D1C

analogous

#1C6784 #1C3384 #391C84

triadic

#1C3384 #841C33 #33841C

tetradic

#1C3384 #841C67 #846D1C #1C8439

square

#1C3384 #841C67 #846D1C #1C8439

split-complementary

#1C3384 #84391C #67841C

monochromatic

#070C1F #111F52 #1C3384 #2747B6 #4364D7

Accessibility & contrast

On white

11.31

#1C3384 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#1C3384 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3384

11.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3384	#FFFFFF	#000000	##FFFFFF
##1C3384	1.00	11.31	1.86	11.31
#FFFFFF	11.31	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F87

Deuteranopia (green-blind)

#003682

Tritanopia (blue-blind)

#004856

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1c3384;
/* rgb */ color: rgb(28, 51, 132);
/* oklch */ color: oklch(35.8% 0.139 266.9);

Tailwind

colors: {
  custom: {
    50: '#6a6aa9',
    500: '#1c3384',
    950: '#000000',
  },
}

SCSS

$custom: #1c3384;
$custom-light: #6a6aa9;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3384",
  "rgb": {
    "r": 28,
    "g": 51,
    "b": 132
  },
  "hsl": {
    "h": 226.731,
    "s": 65,
    "l": 31.373
  },
  "oklch": {
    "l": 0.3582,
    "c": 0.1389,
    "h": 266.9
  },
  "luminance": 0.0428
}

Semantic roles & 50–950 ramp

primary

#1C3384

secondary

#B79E45

accent

#C340E8

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070610

muted

#7A7A7F

Preview Lab

Preview with #1C3384

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

Preview Lab → · Contrast checker → · Palette generator →