#1C2579#1C2579

#1C2579 is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.0% C 0.141 H 270.9°. Best body text is #FFFFFF at 13.21:1 contrast (WCAG AA passes).

Color values

HEX	#1C2579
RGB	rgb(28, 37, 121)
HSL	hsl(234, 62%, 29%)
HSV	hsv(234, 77%, 47%)
CMYK	cmyk(76.9%, 69.4%, 0%, 52.5%)
CIE-LAB	lab(19.84, 27.59, -48.80)
CIE-LCH	lch(19.84, 56.06, 299.48°)
OKLab	oklab(32.02% 0.0023 -0.1411)
OKLCH	oklch(32.02% 0.141 270.9)
XYZ	xyz(4.5905, 2.9500, 18.4129)
Luminance	0.0295 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C2579 #79701C

analogous

#1C5479 #1C2579 #421C79

triadic

#1C2579 #791C25 #25791C

tetradic

#1C2579 #791C54 #79701C #1C7942

square

#1C2579 #791C54 #79701C #1C7942

split-complementary

#1C2579 #79421C #54791C

monochromatic

#060819 #101647 #1C2579 #2834AB #3D4CD2

Accessibility & contrast

On white

13.21

#1C2579 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#1C2579 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C2579

13.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C2579	#FFFFFF	#000000	##FFFFFF
##1C2579	1.00	13.21	1.59	13.21
#FFFFFF	13.21	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00347C

Deuteranopia (green-blind)

#002C77

Tritanopia (blue-blind)

#003C4B

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1c2579;
/* rgb */ color: rgb(28, 37, 121);
/* oklch */ color: oklch(32.0% 0.141 270.9);

Tailwind

colors: {
  custom: {
    50: '#685fa1',
    500: '#1c2579',
    950: '#000000',
  },
}

SCSS

$custom: #1c2579;
$custom-light: #685fa1;
$custom-dark: #000000;

JSON

{
  "hex": "#1c2579",
  "rgb": {
    "r": 28,
    "g": 37,
    "b": 121
  },
  "hsl": {
    "h": 234.194,
    "s": 62.416,
    "l": 29.216
  },
  "oklch": {
    "l": 0.32016,
    "c": 0.14117,
    "h": 270.9
  },
  "luminance": 0.0295
}

Semantic roles & 50–950 ramp

primary

#1C2579

secondary

#ADA344

accent

#D642E5

background

#F6F5FA

surface

#ECE9F3

border

#C7C5CD

text

#07040F

muted

#7A797F

Preview Lab

Preview with #1C2579

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

Preview Lab → · Contrast checker → · Palette generator →