#1C2183#1C2183

#1C2183 is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.4% C 0.159 H 271.2°. Best body text is #FFFFFF at 13.17:1 contrast (WCAG AA passes).

Color values

HEX	#1C2183
RGB	rgb(28, 33, 131)
HSL	hsl(237, 65%, 31%)
HSV	hsv(237, 79%, 51%)
CMYK	cmyk(78.6%, 74.8%, 0%, 48.6%)
CIE-LAB	lab(19.93, 33.92, -55.00)
CIE-LCH	lch(19.93, 64.62, 301.67°)
OKLab	oklab(32.4% 0.0033 -0.1592)
OKLCH	oklch(32.4% 0.159 271.2)
XYZ	xyz(5.1181, 2.9727, 21.7724)
Luminance	0.0297 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C2183 #837E1C

analogous

#1C5483 #1C2183 #4A1C83

triadic

#1C2183 #831C21 #21831C

tetradic

#1C2183 #831C54 #837E1C #1C834A

square

#1C2183 #831C54 #837E1C #1C834A

split-complementary

#1C2183 #834A1C #54831C

monochromatic

#06081E #111451 #1C2183 #272EB5 #434AD7

Accessibility & contrast

On white

13.17

#1C2183 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#1C2183 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C2183

13.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C2183	#FFFFFF	#000000	##FFFFFF
##1C2183	1.00	13.17	1.59	13.17
#FFFFFF	13.17	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003586

Deuteranopia (green-blind)

#002B81

Tritanopia (blue-blind)

#003D50

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1c2183;
/* rgb */ color: rgb(28, 33, 131);
/* oklch */ color: oklch(32.4% 0.159 271.2);

Tailwind

colors: {
  custom: {
    50: '#6b5da8',
    500: '#1c2183',
    950: '#000000',
  },
}

SCSS

$custom: #1c2183;
$custom-light: #6b5da8;
$custom-dark: #000000;

JSON

{
  "hex": "#1c2183",
  "rgb": {
    "r": 28,
    "g": 33,
    "b": 131
  },
  "hsl": {
    "h": 237.087,
    "s": 64.78,
    "l": 31.176
  },
  "oklch": {
    "l": 0.32397,
    "c": 0.15925,
    "h": 271.2
  },
  "luminance": 0.02973
}

Semantic roles & 50–950 ramp

primary

#1C2183

secondary

#B6B145

accent

#E040E8

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #1C2183

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

Preview Lab → · Contrast checker → · Palette generator →