#103A9F#103A9F

#103A9F is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.4% C 0.170 H 263.4°. Best body text is #FFFFFF at 9.87:1 contrast (WCAG AA passes).

Color values

HEX	#103A9F
RGB	rgb(16, 58, 159)
HSL	hsl(222, 82%, 34%)
HSV	hsv(222, 90%, 62%)
CMYK	cmyk(89.9%, 63.5%, 0%, 37.6%)
CIE-LAB	lab(28.48, 27.23, -58.27)
CIE-LCH	lch(28.48, 64.32, 295.05°)
OKLab	oklab(39.36% -0.0195 -0.1688)
OKLCH	oklch(39.36% 0.17 263.4)
XYZ	xyz(7.9825, 5.6384, 33.4618)
Luminance	0.0564 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#103A9F #9F7510

analogous

#10819F #103A9F #2E109F

triadic

#103A9F #9F103A #3A9F10

tetradic

#103A9F #9F1081 #9F7510 #109F2E

square

#103A9F #9F1081 #9F7510 #109F2E

split-complementary

#103A9F #9F2E10 #819F10

monochromatic

#051130 #0A2667 #103A9F #164ED7 #3E71EC

Accessibility & contrast

On white

9.87

#103A9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#103A9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #103A9F

9.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##103A9F	#FFFFFF	#000000	##FFFFFF
##103A9F	1.00	9.87	2.13	9.87
#FFFFFF	9.87	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AA2

Deuteranopia (green-blind)

#003D9D

Tritanopia (blue-blind)

#005567

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #103a9f;
/* rgb */ color: rgb(16, 58, 159);
/* oklch */ color: oklch(39.4% 0.170 263.4);

Tailwind

colors: {
  custom: {
    50: '#6e6fbc',
    500: '#103a9f',
    950: '#000000',
  },
}

SCSS

$custom: #103a9f;
$custom-light: #6e6fbc;
$custom-dark: #000000;

JSON

{
  "hex": "#103a9f",
  "rgb": {
    "r": 16,
    "g": 58,
    "b": 159
  },
  "hsl": {
    "h": 222.378,
    "s": 81.714,
    "l": 34.314
  },
  "oklch": {
    "l": 0.39359,
    "c": 0.16997,
    "h": 263.4
  },
  "luminance": 0.05639
}

Semantic roles & 50–950 ramp

primary

#103A9F

secondary

#CBA240

accent

#BD30F8

background

#F7F6FB

surface

#EDECF7

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #103A9F

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

Preview Lab → · Contrast checker → · Palette generator →