#1C3874#1C3874

#1C3874 is a dark, moderate blue. Relative luminance 0.043; OKLCH L 35.5% C 0.109 H 263.2°. Best body text is #FFFFFF at 11.25:1 contrast (WCAG AA passes).

Color values

HEX	#1C3874
RGB	rgb(28, 56, 116)
HSL	hsl(221, 61%, 28%)
HSV	hsv(221, 76%, 45%)
CMYK	cmyk(75.9%, 51.7%, 0%, 54.5%)
CIE-LAB	lab(24.75, 12.25, -37.62)
CIE-LCH	lch(24.75, 39.57, 288.03°)
OKLab	oklab(35.55% -0.0129 -0.1081)
OKLCH	oklch(35.55% 0.109 263.2)
XYZ	xyz(5.0443, 4.3356, 17.0906)
Luminance	0.0434 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3874 #74581C

analogous

#1C6474 #1C3874 #2C1C74

triadic

#1C3874 #741C38 #38741C

tetradic

#1C3874 #741C64 #74581C #1C742C

square

#1C3874 #741C64 #74581C #1C742C

split-complementary

#1C3874 #742C1C #64741C

monochromatic

#060C19 #102043 #1C3874 #2850A5 #3B6AD0

Accessibility & contrast

On white

11.25

#1C3874 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#1C3874 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3874

11.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3874	#FFFFFF	#000000	##FFFFFF
##1C3874	1.00	11.25	1.87	11.25
#FFFFFF	11.25	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#153F76

Deuteranopia (green-blind)

#003773

Tritanopia (blue-blind)

#004650

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1c3874;
/* rgb */ color: rgb(28, 56, 116);
/* oklch */ color: oklch(35.5% 0.109 263.2);

Tailwind

colors: {
  custom: {
    50: '#656e9c',
    500: '#1c3874',
    950: '#000000',
  },
}

SCSS

$custom: #1c3874;
$custom-light: #656e9c;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3874",
  "rgb": {
    "r": 28,
    "g": 56,
    "b": 116
  },
  "hsl": {
    "h": 220.909,
    "s": 61.111,
    "l": 28.235
  },
  "oklch": {
    "l": 0.3555,
    "c": 0.10884,
    "h": 263.2
  },
  "luminance": 0.04336
}

Semantic roles & 50–950 ramp

primary

#1C3874

secondary

#A88843

accent

#B144E4

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #1C3874

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

Preview Lab → · Contrast checker → · Palette generator →