#1C2589#1C2589

#1C2589 is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.7% C 0.163 H 270.2°. Best body text is #FFFFFF at 12.54:1 contrast (WCAG AA passes).

Color values

HEX	#1C2589
RGB	rgb(28, 37, 137)
HSL	hsl(235, 66%, 32%)
HSV	hsv(235, 80%, 54%)
CMYK	cmyk(79.6%, 73%, 0%, 46.3%)
CIE-LAB	lab(21.49, 33.60, -56.20)
CIE-LCH	lch(21.49, 65.48, 300.87°)
OKLab	oklab(33.7% 0.0005 -0.1627)
OKLCH	oklch(33.7% 0.163 270.2)
XYZ	xyz(5.6543, 3.3755, 24.0156)
Luminance	0.0338 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C2589 #89801C

analogous

#1C5B89 #1C2589 #4A1C89

triadic

#1C2589 #891C25 #25891C

tetradic

#1C2589 #891C5B #89801C #1C894A

square

#1C2589 #891C5B #89801C #1C894A

split-complementary

#1C2589 #894A1C #5B891C

monochromatic

#070A23 #121756 #1C2589 #2633BC #4652D9

Accessibility & contrast

On white

12.54

#1C2589 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#1C2589 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C2589

12.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C2589	#FFFFFF	#000000	##FFFFFF
##1C2589	1.00	12.54	1.68	12.54
#FFFFFF	12.54	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00398C

Deuteranopia (green-blind)

#002E87

Tritanopia (blue-blind)

#004154

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1c2589;
/* rgb */ color: rgb(28, 37, 137);
/* oklch */ color: oklch(33.7% 0.163 270.2);

Tailwind

colors: {
  custom: {
    50: '#6c60ac',
    500: '#1c2589',
    950: '#000000',
  },
}

SCSS

$custom: #1c2589;
$custom-light: #6c60ac;
$custom-dark: #000000;

JSON

{
  "hex": "#1c2589",
  "rgb": {
    "r": 28,
    "g": 37,
    "b": 137
  },
  "hsl": {
    "h": 235.046,
    "s": 66.061,
    "l": 32.353
  },
  "oklch": {
    "l": 0.33704,
    "c": 0.16275,
    "h": 270.2
  },
  "luminance": 0.03376
}

Semantic roles & 50–950 ramp

primary

#1C2589

secondary

#BBB146

accent

#DB3FE9

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080510

muted

#7B797F

Preview Lab

Preview with #1C2589

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

Preview Lab → · Contrast checker → · Palette generator →