#103B8D#103B8D

#103B8D is a dark, vivid blue. Relative luminance 0.052; OKLCH L 37.9% C 0.144 H 261.7°. Best body text is #FFFFFF at 10.33:1 contrast (WCAG AA passes).

Color values

HEX	#103B8D
RGB	rgb(16, 59, 141)
HSL	hsl(219, 80%, 31%)
HSV	hsv(219, 89%, 55%)
CMYK	cmyk(88.7%, 58.2%, 0%, 44.7%)
CIE-LAB	lab(27.19, 19.19, -49.37)
CIE-LCH	lch(27.19, 52.97, 291.24°)
OKLab	oklab(37.9% -0.0208 -0.1427)
OKLCH	oklch(37.9% 0.144 261.7)
XYZ	xyz(6.5836, 5.1603, 25.8432)
Luminance	0.0516 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#103B8D #8D6210

analogous

#10798D #103B8D #23108D

triadic

#103B8D #8D103B #3B8D10

tetradic

#103B8D #8D1079 #8D6210 #108D23

square

#103B8D #8D1079 #8D6210 #108D23

split-complementary

#103B8D #8D2310 #798D10

monochromatic

#040D1F #0A2456 #103B8D #1652C4 #306FE7

Accessibility & contrast

On white

10.33

#103B8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#103B8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #103B8D

10.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##103B8D	#FFFFFF	#000000	##FFFFFF
##103B8D	1.00	10.33	2.03	10.33
#FFFFFF	10.33	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004690

Deuteranopia (green-blind)

#003B8B

Tritanopia (blue-blind)

#00505E

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #103b8d;
/* rgb */ color: rgb(16, 59, 141);
/* oklch */ color: oklch(37.9% 0.144 261.7);

Tailwind

colors: {
  custom: {
    50: '#6870af',
    500: '#103b8d',
    950: '#000000',
  },
}

SCSS

$custom: #103b8d;
$custom-light: #6870af;
$custom-dark: #000000;

JSON

{
  "hex": "#103b8d",
  "rgb": {
    "r": 16,
    "g": 59,
    "b": 141
  },
  "hsl": {
    "h": 219.36,
    "s": 79.618,
    "l": 30.784
  },
  "oklch": {
    "l": 0.37903,
    "c": 0.14424,
    "h": 261.7
  },
  "luminance": 0.05161
}

Semantic roles & 50–950 ramp

primary

#103B8D

secondary

#C29237

accent

#B332F6

background

#F6F6FA

surface

#ECECF5

border

#C7C7CF

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #103B8D

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

Preview Lab → · Contrast checker → · Palette generator →