#103D81#103D81

#103D81 is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.3% C 0.125 H 259.1°. Best body text is #FFFFFF at 10.47:1 contrast (WCAG AA passes).

Color values

HEX	#103D81
RGB	rgb(16, 61, 129)
HSL	hsl(216, 78%, 28%)
HSV	hsv(216, 88%, 51%)
CMYK	cmyk(87.6%, 52.7%, 0%, 49.4%)
CIE-LAB	lab(26.83, 12.75, -42.50)
CIE-LCH	lch(26.83, 44.37, 286.70°)
OKLab	oklab(37.33% -0.0235 -0.1225)
OKLCH	oklch(37.33% 0.125 259.1)
XYZ	xyz(5.8434, 5.0319, 21.4279)
Luminance	0.0503 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#103D81 #815410

analogous

#107581 #103D81 #1B1081

triadic

#103D81 #81103D #3D8110

tetradic

#103D81 #811075 #815410 #10811B

square

#103D81 #811075 #815410 #10811B

split-complementary

#103D81 #811B10 #758110

monochromatic

#030D1B #09234B #103D81 #1757B7 #2772E4

Accessibility & contrast

On white

10.47

#103D81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#103D81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #103D81

10.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##103D81	#FFFFFF	#000000	##FFFFFF
##103D81	1.00	10.47	2.01	10.47
#FFFFFF	10.47	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F4583

Deuteranopia (green-blind)

#003B80

Tritanopia (blue-blind)

#004E59

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #103d81;
/* rgb */ color: rgb(16, 61, 129);
/* oklch */ color: oklch(37.3% 0.125 259.1);

Tailwind

colors: {
  custom: {
    50: '#6571a6',
    500: '#103d81',
    950: '#000000',
  },
}

SCSS

$custom: #103d81;
$custom-light: #6571a6;
$custom-dark: #000000;

JSON

{
  "hex": "#103d81",
  "rgb": {
    "r": 16,
    "g": 61,
    "b": 129
  },
  "hsl": {
    "h": 216.106,
    "s": 77.931,
    "l": 28.431
  },
  "oklch": {
    "l": 0.37328,
    "c": 0.12471,
    "h": 259.1
  },
  "luminance": 0.05033
}

Semantic roles & 50–950 ramp

primary

#103D81

secondary

#B78436

accent

#A833F4

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #103D81

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

Preview Lab → · Contrast checker → · Palette generator →