#1C3189#1C3189

#1C3189 is a dark, vivid blue. Relative luminance 0.043; OKLCH L 35.9% C 0.148 H 267.6°. Best body text is #FFFFFF at 11.35:1 contrast (WCAG AA passes).

Color values

HEX	#1C3189
RGB	rgb(28, 49, 137)
HSL	hsl(228, 66%, 32%)
HSV	hsv(228, 80%, 54%)
CMYK	cmyk(79.6%, 64.2%, 0%, 46.3%)
CIE-LAB	lab(24.48, 25.61, -51.29)
CIE-LCH	lch(24.48, 57.33, 296.54°)
OKLab	oklab(35.89% -0.0062 -0.1483)
OKLCH	oklch(35.89% 0.148 267.6)
XYZ	xyz(6.0910, 4.2490, 24.1612)
Luminance	0.0425 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3189 #89741C

analogous

#1C6889 #1C3189 #3D1C89

triadic

#1C3189 #891C31 #31891C

tetradic

#1C3189 #891C68 #89741C #1C893D

square

#1C3189 #891C68 #89741C #1C893D

split-complementary

#1C3189 #893D1C #68891C

monochromatic

#070D23 #121F56 #1C3189 #2643BC #4663D9

Accessibility & contrast

On white

11.35

#1C3189 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#1C3189 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3189

11.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3189	#FFFFFF	#000000	##FFFFFF
##1C3189	1.00	11.35	1.85	11.35
#FFFFFF	11.35	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F8C

Deuteranopia (green-blind)

#003587

Tritanopia (blue-blind)

#004858

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1c3189;
/* rgb */ color: rgb(28, 49, 137);
/* oklch */ color: oklch(35.9% 0.148 267.6);

Tailwind

colors: {
  custom: {
    50: '#6b68ac',
    500: '#1c3189',
    950: '#000000',
  },
}

SCSS

$custom: #1c3189;
$custom-light: #6b68ac;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3189",
  "rgb": {
    "r": 28,
    "g": 49,
    "b": 137
  },
  "hsl": {
    "h": 228.44,
    "s": 66.061,
    "l": 32.353
  },
  "oklch": {
    "l": 0.35885,
    "c": 0.14847,
    "h": 267.6
  },
  "luminance": 0.0425
}

Semantic roles & 50–950 ramp

primary

#1C3189

secondary

#BBA446

accent

#C83FE9

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #1C3189

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

Preview Lab → · Contrast checker → · Palette generator →