#1C366F#1C366F

#1C366F is a dark, moderate blue. Relative luminance 0.040; OKLCH L 34.7% C 0.104 H 263.5°. Best body text is #FFFFFF at 11.62:1 contrast (WCAG AA passes).

Color values

HEX	#1C366F
RGB	rgb(28, 54, 111)
HSL	hsl(221, 60%, 27%)
HSV	hsv(221, 75%, 44%)
CMYK	cmyk(74.8%, 51.4%, 0%, 56.5%)
CIE-LAB	lab(23.78, 11.63, -36.00)
CIE-LCH	lch(23.78, 37.83, 287.90°)
OKLab	oklab(34.69% -0.0118 -0.1033)
OKLCH	oklch(34.69% 0.104 263.5)
XYZ	xyz(4.6663, 4.0324, 15.5683)
Luminance	0.0403 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C366F #6F551C

analogous

#1C5F6F #1C366F #2C1C6F

triadic

#1C366F #6F1C36 #366F1C

tetradic

#1C366F #6F1C5F #6F551C #1C6F2C

square

#1C366F #6F1C5F #6F551C #1C6F2C

split-complementary

#1C366F #6F2C1C #5F6F1C

monochromatic

#060C18 #101E3E #1C366F #284EA0 #3867CD

Accessibility & contrast

On white

11.62

#1C366F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#1C366F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C366F

11.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C366F	#FFFFFF	#000000	##FFFFFF
##1C366F	1.00	11.62	1.81	11.62
#FFFFFF	11.62	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#163D71

Deuteranopia (green-blind)

#00356E

Tritanopia (blue-blind)

#00434D

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1c366f;
/* rgb */ color: rgb(28, 54, 111);
/* oklch */ color: oklch(34.7% 0.104 263.5);

Tailwind

colors: {
  custom: {
    50: '#646c99',
    500: '#1c366f',
    950: '#000000',
  },
}

SCSS

$custom: #1c366f;
$custom-light: #646c99;
$custom-dark: #000000;

JSON

{
  "hex": "#1c366f",
  "rgb": {
    "r": 28,
    "g": 54,
    "b": 111
  },
  "hsl": {
    "h": 221.205,
    "s": 59.712,
    "l": 27.255
  },
  "oklch": {
    "l": 0.34691,
    "c": 0.10399,
    "h": 263.5
  },
  "luminance": 0.04033
}

Semantic roles & 50–950 ramp

primary

#1C366F

secondary

#A48543

accent

#B145E3

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #1C366F

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

Preview Lab → · Contrast checker → · Palette generator →