#10306C#10306C

#10306C is a dark, moderate blue. Relative luminance 0.033; OKLCH L 32.5% C 0.111 H 261.5°. Best body text is #FFFFFF at 12.64:1 contrast (WCAG AA passes).

Color values

HEX	#10306C
RGB	rgb(16, 48, 108)
HSL	hsl(219, 74%, 24%)
HSV	hsv(219, 85%, 42%)
CMYK	cmyk(85.2%, 55.6%, 0%, 57.6%)
CIE-LAB	lab(21.23, 13.10, -38.21)
CIE-LCH	lch(21.23, 40.39, 288.92°)
OKLab	oklab(32.54% -0.0165 -0.1101)
OKLCH	oklch(32.54% 0.111 261.5)
XYZ	xyz(3.9764, 3.3063, 14.6131)
Luminance	0.0331 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10306C #6C4C10

analogous

#105E6C #10306C #1E106C

triadic

#10306C #6C1030 #306C10

tetradic

#10306C #6C105E #6C4C10 #106C1E

square

#10306C #6C105E #6C4C10 #106C1E

split-complementary

#10306C #6C1E10 #5E6C10

monochromatic

#040C1B #081837 #10306C #1848A1 #205FD7

Accessibility & contrast

On white

12.64

#10306C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#10306C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10306C

12.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10306C	#FFFFFF	#000000	##FFFFFF
##10306C	1.00	12.64	1.66	12.64
#FFFFFF	12.64	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#04376E

Deuteranopia (green-blind)

#002F6B

Tritanopia (blue-blind)

#003F49

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #10306c;
/* rgb */ color: rgb(16, 48, 108);
/* oklch */ color: oklch(32.5% 0.111 261.5);

Tailwind

colors: {
  custom: {
    50: '#606797',
    500: '#10306c',
    950: '#000000',
  },
}

SCSS

$custom: #10306c;
$custom-light: #606797;
$custom-dark: #000000;

JSON

{
  "hex": "#10306c",
  "rgb": {
    "r": 16,
    "g": 48,
    "b": 108
  },
  "hsl": {
    "h": 219.13,
    "s": 74.194,
    "l": 24.314
  },
  "oklch": {
    "l": 0.32542,
    "c": 0.11137,
    "h": 261.5
  },
  "luminance": 0.03307
}

Semantic roles & 50–950 ramp

primary

#10306C

secondary

#A47D34

accent

#B037F1

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#05060D

muted

#7A7A7E

Preview Lab

Preview with #10306C

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

Preview Lab → · Contrast checker → · Palette generator →