#103C9F#103C9F

#103C9F is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.8% C 0.168 H 263.0°. Best body text is #FFFFFF at 9.68:1 contrast (WCAG AA passes).

Color values

HEX	#103C9F
RGB	rgb(16, 60, 159)
HSL	hsl(222, 82%, 34%)
HSV	hsv(222, 90%, 62%)
CMYK	cmyk(89.9%, 62.3%, 0%, 37.6%)
CIE-LAB	lab(29.02, 25.87, -57.40)
CIE-LCH	lch(29.02, 62.96, 294.26°)
OKLab	oklab(39.76% -0.0204 -0.1663)
OKLCH	oklch(39.76% 0.168 263)
XYZ	xyz(8.0853, 5.8440, 33.4960)
Luminance	0.0585 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#103C9F #9F7310

analogous

#10849F #103C9F #2B109F

triadic

#103C9F #9F103C #3C9F10

tetradic

#103C9F #9F1084 #9F7310 #109F2B

square

#103C9F #9F1084 #9F7310 #109F2B

split-complementary

#103C9F #9F2B10 #849F10

monochromatic

#051230 #0A2767 #103C9F #1651D7 #3E73EC

Accessibility & contrast

On white

9.68

#103C9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#103C9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #103C9F

9.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##103C9F	#FFFFFF	#000000	##FFFFFF
##103C9F	1.00	9.68	2.17	9.68
#FFFFFF	9.68	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BA2

Deuteranopia (green-blind)

#003E9D

Tritanopia (blue-blind)

#005667

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #103c9f;
/* rgb */ color: rgb(16, 60, 159);
/* oklch */ color: oklch(39.8% 0.168 263.0);

Tailwind

colors: {
  custom: {
    50: '#6d71bc',
    500: '#103c9f',
    950: '#000000',
  },
}

SCSS

$custom: #103c9f;
$custom-light: #6d71bc;
$custom-dark: #000000;

JSON

{
  "hex": "#103c9f",
  "rgb": {
    "r": 16,
    "g": 60,
    "b": 159
  },
  "hsl": {
    "h": 221.538,
    "s": 81.714,
    "l": 34.314
  },
  "oklch": {
    "l": 0.39756,
    "c": 0.16751,
    "h": 263
  },
  "luminance": 0.05845
}

Semantic roles & 50–950 ramp

primary

#103C9F

secondary

#CBA040

accent

#BA30F8

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #103C9F

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

Preview Lab → · Contrast checker → · Palette generator →