#1C3370#1C3370

#1C3370 is a dark, moderate blue. Relative luminance 0.038; OKLCH L 34.1% C 0.110 H 265.4°. Best body text is #FFFFFF at 11.95:1 contrast (WCAG AA passes).

Color values

HEX	#1C3370
RGB	rgb(28, 51, 112)
HSL	hsl(224, 60%, 27%)
HSV	hsv(224, 75%, 44%)
CMYK	cmyk(75%, 54.5%, 0%, 56.1%)
CIE-LAB	lab(22.94, 14.17, -37.99)
CIE-LCH	lch(22.94, 40.54, 290.46°)
OKLab	oklab(34.08% -0.0088 -0.1092)
OKLCH	oklch(34.08% 0.11 265.4)
XYZ	xyz(4.5863, 3.7839, 15.8148)
Luminance	0.0378 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3370 #70591C

analogous

#1C5D70 #1C3370 #2F1C70

triadic

#1C3370 #701C33 #33701C

tetradic

#1C3370 #701C5D #70591C #1C702F

square

#1C3370 #701C5D #70591C #1C702F

split-complementary

#1C3370 #702F1C #5D701C

monochromatic

#060B18 #101D3F #1C3370 #2849A1 #3962CD

Accessibility & contrast

On white

11.95

#1C3370 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#1C3370 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3370

11.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3370	#FFFFFF	#000000	##FFFFFF
##1C3370	1.00	11.95	1.76	11.95
#FFFFFF	11.95	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0B3B72

Deuteranopia (green-blind)

#00336F

Tritanopia (blue-blind)

#00424C

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1c3370;
/* rgb */ color: rgb(28, 51, 112);
/* oklch */ color: oklch(34.1% 0.110 265.4);

Tailwind

colors: {
  custom: {
    50: '#656a9a',
    500: '#1c3370',
    950: '#000000',
  },
}

SCSS

$custom: #1c3370;
$custom-light: #656a9a;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3370",
  "rgb": {
    "r": 28,
    "g": 51,
    "b": 112
  },
  "hsl": {
    "h": 223.571,
    "s": 60,
    "l": 27.451
  },
  "oklch": {
    "l": 0.34079,
    "c": 0.10958,
    "h": 265.4
  },
  "luminance": 0.03784
}

Semantic roles & 50–950 ramp

primary

#1C3370

secondary

#A58A43

accent

#B845E3

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #1C3370

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

Preview Lab → · Contrast checker → · Palette generator →