#1C3687#1C3687

#1C3687 is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.7% C 0.139 H 266.0°. Best body text is #FFFFFF at 10.90:1 contrast (WCAG AA passes).

Color values

HEX	#1C3687
RGB	rgb(28, 54, 135)
HSL	hsl(225, 66%, 32%)
HSV	hsv(225, 79%, 53%)
CMYK	cmyk(79.3%, 60%, 0%, 47.1%)
CIE-LAB	lab(25.66, 21.36, -48.11)
CIE-LCH	lch(25.66, 52.64, 293.94°)
OKLab	oklab(36.71% -0.0096 -0.1389)
OKLCH	oklch(36.71% 0.139 266)
XYZ	xyz(6.1697, 4.6338, 23.4862)
Luminance	0.0463 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3687 #876D1C

analogous

#1C6B87 #1C3687 #381C87

triadic

#1C3687 #871C36 #36871C

tetradic

#1C3687 #871C6B #876D1C #1C8738

square

#1C3687 #871C6B #876D1C #1C8738

split-complementary

#1C3687 #87381C #6B871C

monochromatic

#070D22 #112254 #1C3687 #274ABA #4569D8

Accessibility & contrast

On white

10.90

#1C3687 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#1C3687 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3687

10.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3687	#FFFFFF	#000000	##FFFFFF
##1C3687	1.00	10.90	1.93	10.90
#FFFFFF	10.90	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00428A

Deuteranopia (green-blind)

#003885

Tritanopia (blue-blind)

#004A59

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1c3687;
/* rgb */ color: rgb(28, 54, 135);
/* oklch */ color: oklch(36.7% 0.139 266.0);

Tailwind

colors: {
  custom: {
    50: '#6a6cab',
    500: '#1c3687',
    950: '#000000',
  },
}

SCSS

$custom: #1c3687;
$custom-light: #6a6cab;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3687",
  "rgb": {
    "r": 28,
    "g": 54,
    "b": 135
  },
  "hsl": {
    "h": 225.421,
    "s": 65.644,
    "l": 31.961
  },
  "oklch": {
    "l": 0.36713,
    "c": 0.13926,
    "h": 266
  },
  "luminance": 0.04634
}

Semantic roles & 50–950 ramp

primary

#1C3687

secondary

#BA9D45

accent

#BF3FE9

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #1C3687

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

Preview Lab → · Contrast checker → · Palette generator →