#103D8D#103D8D

#103D8D is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.3% C 0.142 H 261.0°. Best body text is #FFFFFF at 10.12:1 contrast (WCAG AA passes).

Color values

HEX	#103D8D
RGB	rgb(16, 61, 141)
HSL	hsl(218, 80%, 31%)
HSV	hsv(218, 89%, 55%)
CMYK	cmyk(88.7%, 56.7%, 0%, 44.7%)
CIE-LAB	lab(27.76, 17.79, -48.43)
CIE-LCH	lch(27.76, 51.59, 290.17°)
OKLab	oklab(38.34% -0.0221 -0.1399)
OKLCH	oklch(38.34% 0.142 261)
XYZ	xyz(6.6884, 5.3699, 25.8781)
Luminance	0.0537 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#103D8D #8D6010

analogous

#107B8D #103D8D #21108D

triadic

#103D8D #8D103D #3D8D10

tetradic

#103D8D #8D107B #8D6010 #108D21

square

#103D8D #8D107B #8D6010 #108D21

split-complementary

#103D8D #8D2110 #7B8D10

monochromatic

#040D1F #0A2556 #103D8D #1655C4 #3072E7

Accessibility & contrast

On white

10.12

#103D8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#103D8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #103D8D

10.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##103D8D	#FFFFFF	#000000	##FFFFFF
##103D8D	1.00	10.12	2.07	10.12
#FFFFFF	10.12	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004790

Deuteranopia (green-blind)

#003C8B

Tritanopia (blue-blind)

#00515F

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #103d8d;
/* rgb */ color: rgb(16, 61, 141);
/* oklch */ color: oklch(38.3% 0.142 261.0);

Tailwind

colors: {
  custom: {
    50: '#6871af',
    500: '#103d8d',
    950: '#000000',
  },
}

SCSS

$custom: #103d8d;
$custom-light: #6871af;
$custom-dark: #000000;

JSON

{
  "hex": "#103d8d",
  "rgb": {
    "r": 16,
    "g": 61,
    "b": 141
  },
  "hsl": {
    "h": 218.4,
    "s": 79.618,
    "l": 30.784
  },
  "oklch": {
    "l": 0.38339,
    "c": 0.14166,
    "h": 261
  },
  "luminance": 0.05371
}

Semantic roles & 50–950 ramp

primary

#103D8D

secondary

#C29037

accent

#AF32F6

background

#F6F6FA

surface

#ECECF5

border

#C7C7CF

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #103D8D

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

Preview Lab → · Contrast checker → · Palette generator →