#10306A#10306A

#10306A is a dark, moderate blue. Relative luminance 0.033; OKLCH L 32.4% C 0.108 H 261.1°. Best body text is #FFFFFF at 12.70:1 contrast (WCAG AA passes).

Color values

HEX	#10306A
RGB	rgb(16, 48, 106)
HSL	hsl(219, 74%, 24%)
HSV	hsv(219, 85%, 42%)
CMYK	cmyk(84.9%, 54.7%, 0%, 58.4%)
CIE-LAB	lab(21.07, 12.24, -37.17)
CIE-LCH	lch(21.07, 39.13, 288.22°)
OKLab	oklab(32.37% -0.0167 -0.1071)
OKLCH	oklch(32.37% 0.108 261.1)
XYZ	xyz(3.8712, 3.2642, 14.0589)
Luminance	0.0326 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10306A #6A4A10

analogous

#105D6A #10306A #1D106A

triadic

#10306A #6A1030 #306A10

tetradic

#10306A #6A105D #6A4A10 #106A1D

square

#10306A #6A105D #6A4A10 #106A1D

split-complementary

#10306A #6A1D10 #5D6A10

monochromatic

#040C1B #081835 #10306A #18489F #2060D4

Accessibility & contrast

On white

12.70

#10306A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#10306A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10306A

12.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10306A	#FFFFFF	#000000	##FFFFFF
##10306A	1.00	12.70	1.65	12.70
#FFFFFF	12.70	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#08376C

Deuteranopia (green-blind)

#002F69

Tritanopia (blue-blind)

#003E48

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #10306a;
/* rgb */ color: rgb(16, 48, 106);
/* oklch */ color: oklch(32.4% 0.108 261.1);

Tailwind

colors: {
  custom: {
    50: '#5f6795',
    500: '#10306a',
    950: '#000000',
  },
}

SCSS

$custom: #10306a;
$custom-light: #5f6795;
$custom-dark: #000000;

JSON

{
  "hex": "#10306a",
  "rgb": {
    "r": 16,
    "g": 48,
    "b": 106
  },
  "hsl": {
    "h": 218.667,
    "s": 73.77,
    "l": 23.922
  },
  "oklch": {
    "l": 0.3237,
    "c": 0.10839,
    "h": 261.1
  },
  "luminance": 0.03265
}

Semantic roles & 50–950 ramp

primary

#10306A

secondary

#A27B34

accent

#AF37F0

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#05060D

muted

#7A7A7E

Preview Lab

Preview with #10306A

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

Preview Lab → · Contrast checker → · Palette generator →