#103581#103581

#103581 is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.5% C 0.135 H 262.4°. Best body text is #FFFFFF at 11.36:1 contrast (WCAG AA passes).

Color values

HEX	#103581
RGB	rgb(16, 53, 129)
HSL	hsl(220, 78%, 28%)
HSV	hsv(220, 88%, 51%)
CMYK	cmyk(87.6%, 58.9%, 0%, 49.4%)
CIE-LAB	lab(24.45, 18.42, -46.35)
CIE-LCH	lch(24.45, 49.88, 291.67°)
OKLab	oklab(35.53% -0.018 -0.134)
OKLCH	oklch(35.53% 0.135 262.4)
XYZ	xyz(5.4478, 4.2407, 21.2960)
Luminance	0.0424 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#103581 #815C10

analogous

#106D81 #103581 #231081

triadic

#103581 #811035 #358110

tetradic

#103581 #81106D #815C10 #108123

square

#103581 #81106D #815C10 #108123

split-complementary

#103581 #812310 #6D8110

monochromatic

#030B1B #091F4B #103581 #174BB7 #2765E4

Accessibility & contrast

On white

11.36

#103581 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#103581 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #103581

11.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##103581	#FFFFFF	#000000	##FFFFFF
##103581	1.00	11.36	1.85	11.36
#FFFFFF	11.36	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F84

Deuteranopia (green-blind)

#003580

Tritanopia (blue-blind)

#004855

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #103581;
/* rgb */ color: rgb(16, 53, 129);
/* oklch */ color: oklch(35.5% 0.135 262.4);

Tailwind

colors: {
  custom: {
    50: '#656ba6',
    500: '#103581',
    950: '#000000',
  },
}

SCSS

$custom: #103581;
$custom-light: #656ba6;
$custom-dark: #000000;

JSON

{
  "hex": "#103581",
  "rgb": {
    "r": 16,
    "g": 53,
    "b": 129
  },
  "hsl": {
    "h": 220.354,
    "s": 77.931,
    "l": 28.431
  },
  "oklch": {
    "l": 0.35525,
    "c": 0.13518,
    "h": 262.4
  },
  "luminance": 0.04241
}

Semantic roles & 50–950 ramp

primary

#103581

secondary

#B78D36

accent

#B533F4

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #103581

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

Preview Lab → · Contrast checker → · Palette generator →