#103583#103583

#103583 is a dark, vivid blue. Relative luminance 0.043; OKLCH L 35.7% C 0.138 H 262.6°. Best body text is #FFFFFF at 11.30:1 contrast (WCAG AA passes).

Color values

HEX	#103583
RGB	rgb(16, 53, 131)
HSL	hsl(221, 78%, 29%)
HSV	hsv(221, 88%, 51%)
CMYK	cmyk(87.8%, 59.5%, 0%, 48.6%)
CIE-LAB	lab(24.62, 19.26, -47.33)
CIE-LCH	lch(24.62, 51.09, 292.14°)
OKLab	oklab(35.71% -0.0178 -0.1368)
OKLCH	oklch(35.71% 0.138 262.6)
XYZ	xyz(5.5820, 4.2944, 22.0030)
Luminance	0.0430 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#103583 #835E10

analogous

#106F83 #103583 #251083

triadic

#103583 #831035 #358310

tetradic

#103583 #83106F #835E10 #108325

square

#103583 #83106F #835E10 #108325

split-complementary

#103583 #832510 #6F8310

monochromatic

#030B1B #091F4C #103583 #174BBA #2965E5

Accessibility & contrast

On white

11.30

#103583 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#103583 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #103583

11.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##103583	#FFFFFF	#000000	##FFFFFF
##103583	1.00	11.30	1.86	11.30
#FFFFFF	11.30	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004086

Deuteranopia (green-blind)

#003581

Tritanopia (blue-blind)

#004956

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #103583;
/* rgb */ color: rgb(16, 53, 131);
/* oklch */ color: oklch(35.7% 0.138 262.6);

Tailwind

colors: {
  custom: {
    50: '#666ba8',
    500: '#103583',
    950: '#000000',
  },
}

SCSS

$custom: #103583;
$custom-light: #666ba8;
$custom-dark: #000000;

JSON

{
  "hex": "#103583",
  "rgb": {
    "r": 16,
    "g": 53,
    "b": 131
  },
  "hsl": {
    "h": 220.696,
    "s": 78.231,
    "l": 28.824
  },
  "oklch": {
    "l": 0.35706,
    "c": 0.13801,
    "h": 262.6
  },
  "luminance": 0.04295
}

Semantic roles & 50–950 ramp

primary

#103583

secondary

#B98F36

accent

#B633F5

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#070610

muted

#7A7A7F

Preview Lab

Preview with #103583

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

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