#1C3187#1C3187

#1C3187 is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.7% C 0.146 H 267.6°. Best body text is #FFFFFF at 11.42:1 contrast (WCAG AA passes).

Color values

HEX	#1C3187
RGB	rgb(28, 49, 135)
HSL	hsl(228, 66%, 32%)
HSV	hsv(228, 79%, 53%)
CMYK	cmyk(79.3%, 63.7%, 0%, 47.1%)
CIE-LAB	lab(24.30, 24.83, -50.34)
CIE-LCH	lch(24.30, 56.13, 296.25°)
OKLab	oklab(35.7% -0.0062 -0.1456)
OKLCH	oklch(35.7% 0.146 267.6)
XYZ	xyz(5.9489, 4.1921, 23.4126)
Luminance	0.0419 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3187 #87721C

analogous

#1C6787 #1C3187 #3C1C87

triadic

#1C3187 #871C31 #31871C

tetradic

#1C3187 #871C67 #87721C #1C873C

square

#1C3187 #871C67 #87721C #1C873C

split-complementary

#1C3187 #873C1C #67871C

monochromatic

#070C22 #111F54 #1C3187 #2743BA #4562D8

Accessibility & contrast

On white

11.42

#1C3187 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#1C3187 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3187

11.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3187	#FFFFFF	#000000	##FFFFFF
##1C3187	1.00	11.42	1.84	11.42
#FFFFFF	11.42	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F8A

Deuteranopia (green-blind)

#003585

Tritanopia (blue-blind)

#004757

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1c3187;
/* rgb */ color: rgb(28, 49, 135);
/* oklch */ color: oklch(35.7% 0.146 267.6);

Tailwind

colors: {
  custom: {
    50: '#6b68ab',
    500: '#1c3187',
    950: '#000000',
  },
}

SCSS

$custom: #1c3187;
$custom-light: #6b68ab;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3187",
  "rgb": {
    "r": 28,
    "g": 49,
    "b": 135
  },
  "hsl": {
    "h": 228.224,
    "s": 65.644,
    "l": 31.961
  },
  "oklch": {
    "l": 0.35695,
    "c": 0.14569,
    "h": 267.6
  },
  "luminance": 0.04193
}

Semantic roles & 50–950 ramp

primary

#1C3187

secondary

#BAA345

accent

#C73FE9

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080610

muted

#7A7A7F

Preview Lab

Preview with #1C3187

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

Preview Lab → · Contrast checker → · Palette generator →