#1C366E#1C366E

#1C366E is a dark, moderate blue. Relative luminance 0.040; OKLCH L 34.6% C 0.102 H 263.3°. Best body text is #FFFFFF at 11.65:1 contrast (WCAG AA passes).

Color values

HEX	#1C366E
RGB	rgb(28, 54, 110)
HSL	hsl(221, 59%, 27%)
HSV	hsv(221, 75%, 43%)
CMYK	cmyk(74.5%, 50.9%, 0%, 56.9%)
CIE-LAB	lab(23.71, 11.22, -35.47)
CIE-LCH	lch(23.71, 37.20, 287.55°)
OKLab	oklab(34.61% -0.0119 -0.1018)
OKLCH	oklch(34.61% 0.102 263.3)
XYZ	xyz(4.6115, 4.0105, 15.2799)
Luminance	0.0401 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C366E #6E541C

analogous

#1C5F6E #1C366E #2B1C6E

triadic

#1C366E #6E1C36 #366E1C

tetradic

#1C366E #6E1C5F #6E541C #1C6E2B

square

#1C366E #6E1C5F #6E541C #1C6E2B

split-complementary

#1C366E #6E2B1C #5F6E1C

monochromatic

#060C18 #101E3D #1C366E #284E9F #3867CC

Accessibility & contrast

On white

11.65

#1C366E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#1C366E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C366E

11.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C366E	#FFFFFF	#000000	##FFFFFF
##1C366E	1.00	11.65	1.80	11.65
#FFFFFF	11.65	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#173C70

Deuteranopia (green-blind)

#02356D

Tritanopia (blue-blind)

#00434C

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1c366e;
/* rgb */ color: rgb(28, 54, 110);
/* oklch */ color: oklch(34.6% 0.102 263.3);

Tailwind

colors: {
  custom: {
    50: '#646c98',
    500: '#1c366e',
    950: '#000000',
  },
}

SCSS

$custom: #1c366e;
$custom-light: #646c98;
$custom-dark: #000000;

JSON

{
  "hex": "#1c366e",
  "rgb": {
    "r": 28,
    "g": 54,
    "b": 110
  },
  "hsl": {
    "h": 220.976,
    "s": 59.42,
    "l": 27.059
  },
  "oklch": {
    "l": 0.34612,
    "c": 0.10247,
    "h": 263.3
  },
  "luminance": 0.04011
}

Semantic roles & 50–950 ramp

primary

#1C366E

secondary

#A38443

accent

#B145E3

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #1C366E

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

Preview Lab → · Contrast checker → · Palette generator →