#1C3879#1C3879

#1C3879 is a dark, moderate blue. Relative luminance 0.045; OKLCH L 36.0% C 0.116 H 263.9°. Best body text is #FFFFFF at 11.10:1 contrast (WCAG AA passes).

Color values

HEX	#1C3879
RGB	rgb(28, 56, 121)
HSL	hsl(222, 62%, 29%)
HSV	hsv(222, 77%, 47%)
CMYK	cmyk(76.9%, 53.7%, 0%, 52.5%)
CIE-LAB	lab(25.12, 14.29, -40.20)
CIE-LCH	lch(25.12, 42.66, 289.56°)
OKLab	oklab(35.95% -0.0123 -0.1156)
OKLCH	oklch(35.95% 0.116 263.9)
XYZ	xyz(5.3430, 4.4551, 18.6638)
Luminance	0.0446 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3879 #795D1C

analogous

#1C6779 #1C3879 #2E1C79

triadic

#1C3879 #791C38 #38791C

tetradic

#1C3879 #791C67 #795D1C #1C792E

square

#1C3879 #791C67 #795D1C #1C792E

split-complementary

#1C3879 #792E1C #67791C

monochromatic

#060C19 #102147 #1C3879 #284FAB #3D6AD2

Accessibility & contrast

On white

11.10

#1C3879 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#1C3879 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3879

11.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3879	#FFFFFF	#000000	##FFFFFF
##1C3879	1.00	11.10	1.89	11.10
#FFFFFF	11.10	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E407B

Deuteranopia (green-blind)

#003878

Tritanopia (blue-blind)

#004853

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1c3879;
/* rgb */ color: rgb(28, 56, 121);
/* oklch */ color: oklch(36.0% 0.116 263.9);

Tailwind

colors: {
  custom: {
    50: '#676ea0',
    500: '#1c3879',
    950: '#000000',
  },
}

SCSS

$custom: #1c3879;
$custom-light: #676ea0;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3879",
  "rgb": {
    "r": 28,
    "g": 56,
    "b": 121
  },
  "hsl": {
    "h": 221.935,
    "s": 62.416,
    "l": 29.216
  },
  "oklch": {
    "l": 0.35951,
    "c": 0.11629,
    "h": 263.9
  },
  "luminance": 0.04456
}

Semantic roles & 50–950 ramp

primary

#1C3879

secondary

#AD8D44

accent

#B442E5

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#07070F

muted

#7A7A7E

Preview Lab

Preview with #1C3879

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

Preview Lab → · Contrast checker → · Palette generator →