#10306F#10306F

#10306F is a dark, moderate blue. Relative luminance 0.034; OKLCH L 32.8% C 0.116 H 262.0°. Best body text is #FFFFFF at 12.54:1 contrast (WCAG AA passes).

Color values

HEX	#10306F
RGB	rgb(16, 48, 111)
HSL	hsl(220, 75%, 25%)
HSV	hsv(220, 86%, 44%)
CMYK	cmyk(85.6%, 56.8%, 0%, 56.5%)
CIE-LAB	lab(21.47, 14.38, -39.75)
CIE-LCH	lch(21.47, 42.27, 289.89°)
OKLab	oklab(32.8% -0.0161 -0.1147)
OKLCH	oklch(32.8% 0.116 262)
XYZ	xyz(4.1388, 3.3713, 15.4684)
Luminance	0.0337 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10306F #6F4F10

analogous

#10606F #10306F #1F106F

triadic

#10306F #6F1030 #306F10

tetradic

#10306F #6F1060 #6F4F10 #106F1F

square

#10306F #6F1060 #6F4F10 #106F1F

split-complementary

#10306F #6F1F10 #606F10

monochromatic

#040C1B #08193A #10306F #1847A4 #1F5EDA

Accessibility & contrast

On white

12.54

#10306F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#10306F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10306F

12.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10306F	#FFFFFF	#000000	##FFFFFF
##10306F	1.00	12.54	1.67	12.54
#FFFFFF	12.54	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003871

Deuteranopia (green-blind)

#002F6E

Tritanopia (blue-blind)

#00404A

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #10306f;
/* rgb */ color: rgb(16, 48, 111);
/* oklch */ color: oklch(32.8% 0.116 262.0);

Tailwind

colors: {
  custom: {
    50: '#616799',
    500: '#10306f',
    950: '#000000',
  },
}

SCSS

$custom: #10306f;
$custom-light: #616799;
$custom-dark: #000000;

JSON

{
  "hex": "#10306f",
  "rgb": {
    "r": 16,
    "g": 48,
    "b": 111
  },
  "hsl": {
    "h": 219.789,
    "s": 74.803,
    "l": 24.902
  },
  "oklch": {
    "l": 0.32802,
    "c": 0.11581,
    "h": 262
  },
  "luminance": 0.03372
}

Semantic roles & 50–950 ramp

primary

#10306F

secondary

#A78034

accent

#B236F1

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #10306F

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

Preview Lab → · Contrast checker → · Palette generator →