#1C3E73#1C3E73

#1C3E73 is a dark, moderate blue. Relative luminance 0.049; OKLCH L 36.9% C 0.099 H 259.1°. Best body text is #FFFFFF at 10.57:1 contrast (WCAG AA passes).

Color values

HEX	#1C3E73
RGB	rgb(28, 62, 115)
HSL	hsl(217, 61%, 28%)
HSV	hsv(217, 76%, 45%)
CMYK	cmyk(75.7%, 46.1%, 0%, 54.9%)
CIE-LAB	lab(26.53, 7.63, -34.13)
CIE-LCH	lch(26.53, 34.97, 282.60°)
OKLab	oklab(36.9% -0.0189 -0.0977)
OKLCH	oklch(36.9% 0.099 259.1)
XYZ	xyz(5.2949, 4.9294, 16.8887)
Luminance	0.0493 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3E73 #73511C

analogous

#1C6973 #1C3E73 #261C73

triadic

#1C3E73 #731C3E #3E731C

tetradic

#1C3E73 #731C69 #73511C #1C7326

square

#1C3E73 #731C69 #73511C #1C7326

split-complementary

#1C3E73 #73261C #69731C

monochromatic

#060D19 #102342 #1C3E73 #2859A4 #3A74CF

Accessibility & contrast

On white

10.57

#1C3E73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#1C3E73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3E73

10.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3E73	#FFFFFF	#000000	##FFFFFF
##1C3E73	1.00	10.57	1.99	10.57
#FFFFFF	10.57	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#244375

Deuteranopia (green-blind)

#133B72

Tritanopia (blue-blind)

#004A53

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #1c3e73;
/* rgb */ color: rgb(28, 62, 115);
/* oklch */ color: oklch(36.9% 0.099 259.1);

Tailwind

colors: {
  custom: {
    50: '#65729c',
    500: '#1c3e73',
    950: '#000000',
  },
}

SCSS

$custom: #1c3e73;
$custom-light: #65729c;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3e73",
  "rgb": {
    "r": 28,
    "g": 62,
    "b": 115
  },
  "hsl": {
    "h": 216.552,
    "s": 60.839,
    "l": 28.039
  },
  "oklch": {
    "l": 0.36896,
    "c": 0.09947,
    "h": 259.1
  },
  "luminance": 0.0493
}

Semantic roles & 50–950 ramp

primary

#1C3E73

secondary

#A78043

accent

#A544E4

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06080E

muted

#7A7B7E

Preview Lab

Preview with #1C3E73

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

Preview Lab → · Contrast checker → · Palette generator →