#103F8D#103F8D

#103F8D is a dark, vivid blue. Relative luminance 0.056; OKLCH L 38.8% C 0.139 H 260.3°. Best body text is #FFFFFF at 9.92:1 contrast (WCAG AA passes).

Color values

HEX	#103F8D
RGB	rgb(16, 63, 141)
HSL	hsl(217, 80%, 31%)
HSV	hsv(217, 89%, 55%)
CMYK	cmyk(88.7%, 55.3%, 0%, 44.7%)
CIE-LAB	lab(28.35, 16.39, -47.48)
CIE-LCH	lch(28.35, 50.23, 289.04°)
OKLab	oklab(38.78% -0.0234 -0.1371)
OKLCH	oklch(38.78% 0.139 260.3)
XYZ	xyz(6.7972, 5.5874, 25.9144)
Luminance	0.0559 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#103F8D #8D5E10

analogous

#107D8D #103F8D #1F108D

triadic

#103F8D #8D103F #3F8D10

tetradic

#103F8D #8D107D #8D5E10 #108D1F

square

#103F8D #8D107D #8D5E10 #108D1F

split-complementary

#103F8D #8D1F10 #7D8D10

monochromatic

#040E1F #0A2656 #103F8D #1658C4 #3075E7

Accessibility & contrast

On white

9.92

#103F8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#103F8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #103F8D

9.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##103F8D	#FFFFFF	#000000	##FFFFFF
##103F8D	1.00	9.92	2.12	9.92
#FFFFFF	9.92	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004990

Deuteranopia (green-blind)

#003E8B

Tritanopia (blue-blind)

#00525F

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #103f8d;
/* rgb */ color: rgb(16, 63, 141);
/* oklch */ color: oklch(38.8% 0.139 260.3);

Tailwind

colors: {
  custom: {
    50: '#6873af',
    500: '#103f8d',
    950: '#000000',
  },
}

SCSS

$custom: #103f8d;
$custom-light: #6873af;
$custom-dark: #000000;

JSON

{
  "hex": "#103f8d",
  "rgb": {
    "r": 16,
    "g": 63,
    "b": 141
  },
  "hsl": {
    "h": 217.44,
    "s": 79.618,
    "l": 30.784
  },
  "oklch": {
    "l": 0.38782,
    "c": 0.13908,
    "h": 260.3
  },
  "luminance": 0.05588
}

Semantic roles & 50–950 ramp

primary

#103F8D

secondary

#C28E37

accent

#AC32F6

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#070810

muted

#7A7B7F

Preview Lab

Preview with #103F8D

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

Preview Lab → · Contrast checker → · Palette generator →