#1C357B#1C357B

#1C357B is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.4% C 0.123 H 265.6°. Best body text is #FFFFFF at 11.38:1 contrast (WCAG AA passes).

Color values

HEX	#1C357B
RGB	rgb(28, 53, 123)
HSL	hsl(224, 63%, 30%)
HSV	hsv(224, 77%, 48%)
CMYK	cmyk(77.2%, 56.9%, 0%, 51.8%)
CIE-LAB	lab(24.39, 17.22, -42.64)
CIE-LCH	lch(24.39, 45.99, 291.99°)
OKLab	oklab(35.45% -0.0095 -0.1229)
OKLCH	oklch(35.45% 0.123 265.6)
XYZ	xyz(5.3259, 4.2226, 19.2694)
Luminance	0.0422 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C357B #7B621C

analogous

#1C647B #1C357B #331C7B

triadic

#1C357B #7B1C35 #357B1C

tetradic

#1C357B #7B1C64 #7B621C #1C7B33

square

#1C357B #7B1C64 #7B621C #1C7B33

split-complementary

#1C357B #7B331C #647B1C

monochromatic

#060B19 #112049 #1C357B #274AAD #3E65D3

Accessibility & contrast

On white

11.38

#1C357B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#1C357B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C357B

11.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C357B	#FFFFFF	#000000	##FFFFFF
##1C357B	1.00	11.38	1.84	11.38
#FFFFFF	11.38	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F7D

Deuteranopia (green-blind)

#00367A

Tritanopia (blue-blind)

#004652

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1c357b;
/* rgb */ color: rgb(28, 53, 123);
/* oklch */ color: oklch(35.4% 0.123 265.6);

Tailwind

colors: {
  custom: {
    50: '#676ba2',
    500: '#1c357b',
    950: '#000000',
  },
}

SCSS

$custom: #1c357b;
$custom-light: #676ba2;
$custom-dark: #000000;

JSON

{
  "hex": "#1c357b",
  "rgb": {
    "r": 28,
    "g": 53,
    "b": 123
  },
  "hsl": {
    "h": 224.211,
    "s": 62.914,
    "l": 29.608
  },
  "oklch": {
    "l": 0.35449,
    "c": 0.12326,
    "h": 265.6
  },
  "luminance": 0.04223
}

Semantic roles & 50–950 ramp

primary

#1C357B

secondary

#AF9344

accent

#BB42E6

background

#F6F6FA

surface

#EBEBF3

border

#C6C6CD

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1C357B

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

Preview Lab → · Contrast checker → · Palette generator →