#1C4381#1C4381

#1C4381 is a dark, moderate blue. Relative luminance 0.058; OKLCH L 39.1% C 0.114 H 259.4°. Best body text is #FFFFFF at 9.68:1 contrast (WCAG AA passes).

Color values

HEX	#1C4381
RGB	rgb(28, 67, 129)
HSL	hsl(217, 64%, 31%)
HSV	hsv(217, 78%, 51%)
CMYK	cmyk(78.3%, 48.1%, 0%, 49.4%)
CIE-LAB	lab(29.02, 9.87, -38.94)
CIE-LCH	lch(29.02, 40.17, 284.22°)
OKLab	oklab(39.12% -0.0209 -0.1117)
OKLCH	oklch(39.12% 0.114 259.4)
XYZ	xyz(6.4471, 5.8454, 21.5531)
Luminance	0.0585 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C4381 #815A1C

analogous

#1C7581 #1C4381 #281C81

triadic

#1C4381 #811C43 #43811C

tetradic

#1C4381 #811C75 #815A1C #1C8128

square

#1C4381 #811C75 #815A1C #1C8128

split-complementary

#1C4381 #81281C #75811C

monochromatic

#060F1C #11294F #1C4381 #275DB3 #427BD6

Accessibility & contrast

On white

9.68

#1C4381 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#1C4381 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C4381

9.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C4381	#FFFFFF	#000000	##FFFFFF
##1C4381	1.00	9.68	2.17	9.68
#FFFFFF	9.68	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#224983

Deuteranopia (green-blind)

#084080

Tritanopia (blue-blind)

#00525B

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1c4381;
/* rgb */ color: rgb(28, 67, 129);
/* oklch */ color: oklch(39.1% 0.114 259.4);

Tailwind

colors: {
  custom: {
    50: '#6876a6',
    500: '#1c4381',
    950: '#000000',
  },
}

SCSS

$custom: #1c4381;
$custom-light: #6876a6;
$custom-dark: #000000;

JSON

{
  "hex": "#1c4381",
  "rgb": {
    "r": 28,
    "g": 67,
    "b": 129
  },
  "hsl": {
    "h": 216.832,
    "s": 64.331,
    "l": 30.784
  },
  "oklch": {
    "l": 0.39117,
    "c": 0.11365,
    "h": 259.4
  },
  "luminance": 0.05846
}

Semantic roles & 50–950 ramp

primary

#1C4381

secondary

#B48944

accent

#A740E7

background

#F6F7FA

surface

#EBEDF4

border

#C6C8CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1C4381

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

Preview Lab → · Contrast checker → · Palette generator →