#103DA1#103DA1

#103DA1 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.1% C 0.169 H 262.9°. Best body text is #FFFFFF at 9.53:1 contrast (WCAG AA passes).

Color values

HEX	#103DA1
RGB	rgb(16, 61, 161)
HSL	hsl(221, 82%, 35%)
HSV	hsv(221, 90%, 63%)
CMYK	cmyk(90.1%, 62.1%, 0%, 36.9%)
CIE-LAB	lab(29.46, 25.99, -57.88)
CIE-LCH	lch(29.46, 63.45, 294.18°)
OKLab	oklab(40.14% -0.0209 -0.1676)
OKLCH	oklch(40.14% 0.169 262.9)
XYZ	xyz(8.3131, 6.0198, 34.4351)
Luminance	0.0602 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#103DA1 #A17410

analogous

#1086A1 #103DA1 #2B10A1

triadic

#103DA1 #A1103D #3DA110

tetradic

#103DA1 #A11086 #A17410 #10A12B

square

#103DA1 #A11086 #A17410 #10A12B

split-complementary

#103DA1 #A12B10 #86A110

monochromatic

#051332 #0A2869 #103DA1 #1652D9 #3F75EC

Accessibility & contrast

On white

9.53

#103DA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#103DA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #103DA1

9.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##103DA1	#FFFFFF	#000000	##FFFFFF
##103DA1	1.00	9.53	2.20	9.53
#FFFFFF	9.53	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CA4

Deuteranopia (green-blind)

#003F9F

Tritanopia (blue-blind)

#005769

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #103da1;
/* rgb */ color: rgb(16, 61, 161);
/* oklch */ color: oklch(40.1% 0.169 262.9);

Tailwind

colors: {
  custom: {
    50: '#6e72be',
    500: '#103da1',
    950: '#000000',
  },
}

SCSS

$custom: #103da1;
$custom-light: #6e72be;
$custom-dark: #000000;

JSON

{
  "hex": "#103da1",
  "rgb": {
    "r": 16,
    "g": 61,
    "b": 161
  },
  "hsl": {
    "h": 221.379,
    "s": 81.921,
    "l": 34.706
  },
  "oklch": {
    "l": 0.40145,
    "c": 0.16894,
    "h": 262.9
  },
  "luminance": 0.06021
}

Semantic roles & 50–950 ramp

primary

#103DA1

secondary

#CCA141

accent

#BA30F8

background

#F7F6FB

surface

#EDECF7

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #103DA1

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

Preview Lab → · Contrast checker → · Palette generator →