#1C3083#1C3083

#1C3083 is a dark, vivid blue. Relative luminance 0.040; OKLCH L 35.1% C 0.141 H 267.8°. Best body text is #FFFFFF at 11.67:1 contrast (WCAG AA passes).

Color values

HEX	#1C3083
RGB	rgb(28, 48, 131)
HSL	hsl(228, 65%, 31%)
HSV	hsv(228, 79%, 51%)
CMYK	cmyk(78.6%, 63.4%, 0%, 48.6%)
CIE-LAB	lab(23.67, 23.94, -48.87)
CIE-LCH	lch(23.67, 54.41, 296.10°)
OKLab	oklab(35.12% -0.0055 -0.1412)
OKLCH	oklch(35.12% 0.141 267.8)
XYZ	xyz(5.6312, 3.9989, 21.9434)
Luminance	0.0400 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3083 #836F1C

analogous

#1C6383 #1C3083 #3B1C83

triadic

#1C3083 #831C30 #30831C

tetradic

#1C3083 #831C63 #836F1C #1C833B

square

#1C3083 #831C63 #836F1C #1C833B

split-complementary

#1C3083 #833B1C #63831C

monochromatic

#060B1E #111E51 #1C3083 #2742B5 #435FD7

Accessibility & contrast

On white

11.67

#1C3083 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#1C3083 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3083

11.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3083	#FFFFFF	#000000	##FFFFFF
##1C3083	1.00	11.67	1.80	11.67
#FFFFFF	11.67	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D86

Deuteranopia (green-blind)

#003481

Tritanopia (blue-blind)

#004554

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1c3083;
/* rgb */ color: rgb(28, 48, 131);
/* oklch */ color: oklch(35.1% 0.141 267.8);

Tailwind

colors: {
  custom: {
    50: '#6a68a8',
    500: '#1c3083',
    950: '#000000',
  },
}

SCSS

$custom: #1c3083;
$custom-light: #6a68a8;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3083",
  "rgb": {
    "r": 28,
    "g": 48,
    "b": 131
  },
  "hsl": {
    "h": 228.35,
    "s": 64.78,
    "l": 31.176
  },
  "oklch": {
    "l": 0.35117,
    "c": 0.14135,
    "h": 267.8
  },
  "luminance": 0.03999
}

Semantic roles & 50–950 ramp

primary

#1C3083

secondary

#B6A045

accent

#C740E8

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070610

muted

#7A7A7F

Preview Lab

Preview with #1C3083

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

Preview Lab → · Contrast checker → · Palette generator →