#1C356B#1C356B

#1C356B is a dark, moderate blue. Relative luminance 0.039; OKLCH L 34.1% C 0.099 H 263.4°. Best body text is #FFFFFF at 11.86:1 contrast (WCAG AA passes).

Color values

HEX	#1C356B
RGB	rgb(28, 53, 107)
HSL	hsl(221, 59%, 26%)
HSV	hsv(221, 74%, 42%)
CMYK	cmyk(73.8%, 50.5%, 0%, 58%)
CIE-LAB	lab(23.18, 10.70, -34.38)
CIE-LCH	lch(23.18, 36.01, 287.29°)
OKLab	oklab(34.14% -0.0114 -0.0986)
OKLCH	oklch(34.14% 0.099 263.4)
XYZ	xyz(4.4049, 3.8542, 14.4189)
Luminance	0.0386 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C356B #6B521C

analogous

#1C5D6B #1C356B #2B1C6B

triadic

#1C356B #6B1C35 #356B1C

tetradic

#1C356B #6B1C5D #6B521C #1C6B2B

square

#1C356B #6B1C5D #6B521C #1C6B2B

split-complementary

#1C356B #6B2B1C #5D6B1C

monochromatic

#060C18 #0F1D3A #1C356B #294D9C #3766CB

Accessibility & contrast

On white

11.86

#1C356B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#1C356B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C356B

11.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C356B	#FFFFFF	#000000	##FFFFFF
##1C356B	1.00	11.86	1.77	11.86
#FFFFFF	11.86	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#183B6D

Deuteranopia (green-blind)

#05346A

Tritanopia (blue-blind)

#00424A

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1c356b;
/* rgb */ color: rgb(28, 53, 107);
/* oklch */ color: oklch(34.1% 0.099 263.4);

Tailwind

colors: {
  custom: {
    50: '#636b96',
    500: '#1c356b',
    950: '#000000',
  },
}

SCSS

$custom: #1c356b;
$custom-light: #636b96;
$custom-dark: #000000;

JSON

{
  "hex": "#1c356b",
  "rgb": {
    "r": 28,
    "g": 53,
    "b": 107
  },
  "hsl": {
    "h": 221.013,
    "s": 58.519,
    "l": 26.471
  },
  "oklch": {
    "l": 0.34143,
    "c": 0.09925,
    "h": 263.4
  },
  "luminance": 0.03855
}

Semantic roles & 50–950 ramp

primary

#1C356B

secondary

#A08243

accent

#B046E2

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060D

muted

#7A7A7E

Preview Lab

Preview with #1C356B

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

Preview Lab → · Contrast checker → · Palette generator →