#1C3590#1C3590

#1C3590 is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.3% C 0.153 H 266.7°. Best body text is #FFFFFF at 10.71:1 contrast (WCAG AA passes).

Color values

HEX	#1C3590
RGB	rgb(28, 53, 144)
HSL	hsl(227, 67%, 34%)
HSV	hsv(227, 81%, 56%)
CMYK	cmyk(80.6%, 63.2%, 0%, 43.5%)
CIE-LAB	lab(26.17, 25.62, -52.86)
CIE-LCH	lch(26.17, 58.74, 295.86°)
OKLab	oklab(37.34% -0.0088 -0.1529)
OKLCH	oklch(37.34% 0.153 266.7)
XYZ	xyz(6.7843, 4.8059, 26.9502)
Luminance	0.0481 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3590 #90771C

analogous

#1C6F90 #1C3590 #3D1C90

triadic

#1C3590 #901C35 #35901C

tetradic

#1C3590 #901C6F #90771C #1C903D

square

#1C3590 #901C6F #90771C #1C903D

split-complementary

#1C3590 #903D1C #6F901C

monochromatic

#080F2A #12225D #1C3590 #2648C3 #4A6ADC

Accessibility & contrast

On white

10.71

#1C3590 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#1C3590 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3590

10.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3590	#FFFFFF	#000000	##FFFFFF
##1C3590	1.00	10.71	1.96	10.71
#FFFFFF	10.71	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004493

Deuteranopia (green-blind)

#00398E

Tritanopia (blue-blind)

#004D5D

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #1c3590;
/* rgb */ color: rgb(28, 53, 144);
/* oklch */ color: oklch(37.3% 0.153 266.7);

Tailwind

colors: {
  custom: {
    50: '#6d6cb1',
    500: '#1c3590',
    950: '#000000',
  },
}

SCSS

$custom: #1c3590;
$custom-light: #6d6cb1;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3590",
  "rgb": {
    "r": 28,
    "g": 53,
    "b": 144
  },
  "hsl": {
    "h": 227.069,
    "s": 67.442,
    "l": 33.725
  },
  "oklch": {
    "l": 0.37336,
    "c": 0.15313,
    "h": 266.7
  },
  "luminance": 0.04807
}

Semantic roles & 50–950 ramp

primary

#1C3590

secondary

#BEA54A

accent

#C53DEA

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080611

muted

#7B7A80

Preview Lab

Preview with #1C3590

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

Preview Lab → · Contrast checker → · Palette generator →