#1C355B#1C355B

#1C355B is a dark, moderate blue. Relative luminance 0.035; OKLCH L 33.0% C 0.074 H 258.6°. Best body text is #FFFFFF at 12.28:1 contrast (WCAG AA passes).

Color values

HEX	#1C355B
RGB	rgb(28, 53, 91)
HSL	hsl(216, 53%, 23%)
HSV	hsv(216, 69%, 36%)
CMYK	cmyk(69.2%, 41.8%, 0%, 64.3%)
CIE-LAB	lab(22.12, 4.23, -25.67)
CIE-LCH	lch(22.12, 26.02, 279.36°)
OKLab	oklab(32.98% -0.0148 -0.073)
OKLCH	oklch(32.98% 0.074 258.6)
XYZ	xyz(3.6396, 3.5481, 10.3885)
Luminance	0.0355 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C355B #5B421C

analogous

#1C545B #1C355B #221C5B

triadic

#1C355B #5B1C35 #355B1C

tetradic

#1C355B #5B1C54 #5B421C #1C5B22

square

#1C355B #5B1C54 #5B421C #1C5B22

split-complementary

#1C355B #5B221C #545B1C

monochromatic

#070E17 #0E1A2C #1C355B #2A508A #396CB9

Accessibility & contrast

On white

12.28

#1C355B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#1C355B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C355B

12.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C355B	#FFFFFF	#000000	##FFFFFF
##1C355B	1.00	12.28	1.71	12.28
#FFFFFF	12.28	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#24385D

Deuteranopia (green-blind)

#1B325A

Tritanopia (blue-blind)

#003E43

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1c355b;
/* rgb */ color: rgb(28, 53, 91);
/* oklch */ color: oklch(33.0% 0.074 258.6);

Tailwind

colors: {
  custom: {
    50: '#606b89',
    500: '#1c355b',
    950: '#000000',
  },
}

SCSS

$custom: #1c355b;
$custom-light: #606b89;
$custom-dark: #000000;

JSON

{
  "hex": "#1c355b",
  "rgb": {
    "r": 28,
    "g": 53,
    "b": 91
  },
  "hsl": {
    "h": 216.19,
    "s": 52.941,
    "l": 23.333
  },
  "oklch": {
    "l": 0.32977,
    "c": 0.07447,
    "h": 258.6
  },
  "luminance": 0.03548
}

Semantic roles & 50–950 ramp

primary

#1C355B

secondary

#907142

accent

#A34BDC

background

#F5F6F8

surface

#EAEBF0

border

#C6C6CB

text

#05060B

muted

#797A7C

Preview Lab

Preview with #1C355B

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

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