#1C3377#1C3377

#1C3377 is a dark, vivid blue. Relative luminance 0.039; OKLCH L 34.7% C 0.120 H 266.1°. Best body text is #FFFFFF at 11.74:1 contrast (WCAG AA passes).

Color values

HEX	#1C3377
RGB	rgb(28, 51, 119)
HSL	hsl(225, 62%, 29%)
HSV	hsv(225, 76%, 47%)
CMYK	cmyk(76.5%, 57.1%, 0%, 53.3%)
CIE-LAB	lab(23.49, 17.02, -41.57)
CIE-LCH	lch(23.49, 44.92, 292.26°)
OKLab	oklab(34.67% -0.0082 -0.1198)
OKLCH	oklch(34.67% 0.12 266.1)
XYZ	xyz(4.9913, 3.9459, 17.9478)
Luminance	0.0395 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3377 #77601C

analogous

#1C6177 #1C3377 #331C77

triadic

#1C3377 #771C33 #33771C

tetradic

#1C3377 #771C61 #77601C #1C7733

square

#1C3377 #771C61 #77601C #1C7733

split-complementary

#1C3377 #77331C #61771C

monochromatic

#060B19 #101E45 #1C3377 #2848A9 #3C62D1

Accessibility & contrast

On white

11.74

#1C3377 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#1C3377 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3377

11.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3377	#FFFFFF	#000000	##FFFFFF
##1C3377	1.00	11.74	1.79	11.74
#FFFFFF	11.74	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C79

Deuteranopia (green-blind)

#003476

Tritanopia (blue-blind)

#00444F

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1c3377;
/* rgb */ color: rgb(28, 51, 119);
/* oklch */ color: oklch(34.7% 0.120 266.1);

Tailwind

colors: {
  custom: {
    50: '#666a9f',
    500: '#1c3377',
    950: '#000000',
  },
}

SCSS

$custom: #1c3377;
$custom-light: #666a9f;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3377",
  "rgb": {
    "r": 28,
    "g": 51,
    "b": 119
  },
  "hsl": {
    "h": 224.835,
    "s": 61.905,
    "l": 28.824
  },
  "oklch": {
    "l": 0.34667,
    "c": 0.12005,
    "h": 266.1
  },
  "luminance": 0.03946
}

Semantic roles & 50–950 ramp

primary

#1C3377

secondary

#AB9144

accent

#BC43E5

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#07060E

muted

#7A7A7E

Preview Lab

Preview with #1C3377

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

Preview Lab → · Contrast checker → · Palette generator →