#1C4483#1C4483

#1C4483 is a dark, moderate blue. Relative luminance 0.060; OKLCH L 39.5% C 0.115 H 259.3°. Best body text is #FFFFFF at 9.53:1 contrast (WCAG AA passes).

Color values

HEX	#1C4483
RGB	rgb(28, 68, 131)
HSL	hsl(217, 65%, 31%)
HSV	hsv(217, 79%, 51%)
CMYK	cmyk(78.6%, 48.1%, 0%, 48.6%)
CIE-LAB	lab(29.46, 9.99, -39.47)
CIE-LCH	lch(29.46, 40.72, 284.20°)
OKLab	oklab(39.5% -0.0214 -0.1133)
OKLCH	oklch(39.5% 0.115 259.3)
XYZ	xyz(6.6413, 6.0191, 22.2801)
Luminance	0.0602 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C4483 #835B1C

analogous

#1C7783 #1C4483 #271C83

triadic

#1C4483 #831C44 #44831C

tetradic

#1C4483 #831C77 #835B1C #1C8327

square

#1C4483 #831C77 #835B1C #1C8327

split-complementary

#1C4483 #83271C #77831C

monochromatic

#06101E #112A51 #1C4483 #275EB5 #437CD7

Accessibility & contrast

On white

9.53

#1C4483 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#1C4483 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C4483

9.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C4483	#FFFFFF	#000000	##FFFFFF
##1C4483	1.00	9.53	2.20	9.53
#FFFFFF	9.53	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#224A85

Deuteranopia (green-blind)

#074182

Tritanopia (blue-blind)

#00535D

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #1c4483;
/* rgb */ color: rgb(28, 68, 131);
/* oklch */ color: oklch(39.5% 0.115 259.3);

Tailwind

colors: {
  custom: {
    50: '#6877a7',
    500: '#1c4483',
    950: '#000000',
  },
}

SCSS

$custom: #1c4483;
$custom-light: #6877a7;
$custom-dark: #000000;

JSON

{
  "hex": "#1c4483",
  "rgb": {
    "r": 28,
    "g": 68,
    "b": 131
  },
  "hsl": {
    "h": 216.699,
    "s": 64.78,
    "l": 31.176
  },
  "oklch": {
    "l": 0.39501,
    "c": 0.11529,
    "h": 259.3
  },
  "luminance": 0.0602
}

Semantic roles & 50–950 ramp

primary

#1C4483

secondary

#B68A45

accent

#A740E8

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1C4483

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

Preview Lab → · Contrast checker → · Palette generator →