#1C3173#1C3173

#1C3173 is a dark, moderate blue. Relative luminance 0.037; OKLCH L 33.9% C 0.117 H 266.7°. Best body text is #FFFFFF at 12.10:1 contrast (WCAG AA passes).

Color values

HEX	#1C3173
RGB	rgb(28, 49, 115)
HSL	hsl(226, 61%, 28%)
HSV	hsv(226, 76%, 45%)
CMYK	cmyk(75.7%, 57.4%, 0%, 54.9%)
CIE-LAB	lab(22.59, 16.82, -40.49)
CIE-LCH	lch(22.59, 43.84, 292.56°)
OKLab	oklab(33.88% -0.0067 -0.1166)
OKLCH	oklch(33.88% 0.117 266.7)
XYZ	xyz(4.6706, 3.6808, 16.6806)
Luminance	0.0368 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3173 #735E1C

analogous

#1C5C73 #1C3173 #321C73

triadic

#1C3173 #731C31 #31731C

tetradic

#1C3173 #731C5C #735E1C #1C7332

square

#1C3173 #731C5C #735E1C #1C7332

split-complementary

#1C3173 #73321C #5C731C

monochromatic

#060A19 #101C42 #1C3173 #2846A4 #3A5ECF

Accessibility & contrast

On white

12.10

#1C3173 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#1C3173 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3173

12.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3173	#FFFFFF	#000000	##FFFFFF
##1C3173	1.00	12.10	1.74	12.10
#FFFFFF	12.10	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A75

Deuteranopia (green-blind)

#003272

Tritanopia (blue-blind)

#00414D

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #1c3173;
/* rgb */ color: rgb(28, 49, 115);
/* oklch */ color: oklch(33.9% 0.117 266.7);

Tailwind

colors: {
  custom: {
    50: '#65689c',
    500: '#1c3173',
    950: '#000000',
  },
}

SCSS

$custom: #1c3173;
$custom-light: #65689c;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3173",
  "rgb": {
    "r": 28,
    "g": 49,
    "b": 115
  },
  "hsl": {
    "h": 225.517,
    "s": 60.839,
    "l": 28.039
  },
  "oklch": {
    "l": 0.33884,
    "c": 0.11681,
    "h": 266.7
  },
  "luminance": 0.03681
}

Semantic roles & 50–950 ramp

primary

#1C3173

secondary

#A78F43

accent

#BD44E4

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #1C3173

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

Preview Lab → · Contrast checker → · Palette generator →