#1C3374#1C3374

#1C3374 is a dark, moderate blue. Relative luminance 0.039; OKLCH L 34.4% C 0.116 H 265.8°. Best body text is #FFFFFF at 11.83:1 contrast (WCAG AA passes).

Color values

HEX	#1C3374
RGB	rgb(28, 51, 116)
HSL	hsl(224, 61%, 28%)
HSV	hsv(224, 76%, 45%)
CMYK	cmyk(75.9%, 56%, 0%, 54.5%)
CIE-LAB	lab(23.25, 15.80, -40.04)
CIE-LCH	lch(23.25, 43.05, 291.53°)
OKLab	oklab(34.41% -0.0084 -0.1153)
OKLCH	oklch(34.41% 0.116 265.8)
XYZ	xyz(4.8140, 3.8750, 17.0138)
Luminance	0.0387 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3374 #745D1C

analogous

#1C5F74 #1C3374 #311C74

triadic

#1C3374 #741C33 #33741C

tetradic

#1C3374 #741C5F #745D1C #1C7431

square

#1C3374 #741C5F #745D1C #1C7431

split-complementary

#1C3374 #74311C #5F741C

monochromatic

#060B19 #101D43 #1C3374 #2849A5 #3B62D0

Accessibility & contrast

On white

11.83

#1C3374 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#1C3374 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3374

11.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3374	#FFFFFF	#000000	##FFFFFF
##1C3374	1.00	11.83	1.78	11.83
#FFFFFF	11.83	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#033C76

Deuteranopia (green-blind)

#003473

Tritanopia (blue-blind)

#00434E

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1c3374;
/* rgb */ color: rgb(28, 51, 116);
/* oklch */ color: oklch(34.4% 0.116 265.8);

Tailwind

colors: {
  custom: {
    50: '#666a9d',
    500: '#1c3374',
    950: '#000000',
  },
}

SCSS

$custom: #1c3374;
$custom-light: #666a9d;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3374",
  "rgb": {
    "r": 28,
    "g": 51,
    "b": 116
  },
  "hsl": {
    "h": 224.318,
    "s": 61.111,
    "l": 28.235
  },
  "oklch": {
    "l": 0.34412,
    "c": 0.11559,
    "h": 265.8
  },
  "luminance": 0.03875
}

Semantic roles & 50–950 ramp

primary

#1C3374

secondary

#A88E43

accent

#BA44E4

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #1C3374

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

Preview Lab → · Contrast checker → · Palette generator →