#10306D#10306D

#10306D is a dark, moderate blue. Relative luminance 0.033; OKLCH L 32.6% C 0.113 H 261.7°. Best body text is #FFFFFF at 12.61:1 contrast (WCAG AA passes).

Color values

HEX	#10306D
RGB	rgb(16, 48, 109)
HSL	hsl(219, 74%, 25%)
HSV	hsv(219, 85%, 43%)
CMYK	cmyk(85.3%, 56%, 0%, 57.3%)
CIE-LAB	lab(21.31, 13.53, -38.72)
CIE-LCH	lch(21.31, 41.02, 289.26°)
OKLab	oklab(32.63% -0.0163 -0.1117)
OKLCH	oklch(32.63% 0.113 261.7)
XYZ	xyz(4.0300, 3.3277, 14.8949)
Luminance	0.0333 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10306D #6D4D10

analogous

#105F6D #10306D #1F106D

triadic

#10306D #6D1030 #306D10

tetradic

#10306D #6D105F #6D4D10 #106D1F

square

#10306D #6D105F #6D4D10 #106D1F

split-complementary

#10306D #6D1F10 #5F6D10

monochromatic

#040C1B #081838 #10306D #1848A2 #205FD8

Accessibility & contrast

On white

12.61

#10306D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#10306D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10306D

12.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10306D	#FFFFFF	#000000	##FFFFFF
##10306D	1.00	12.61	1.67	12.61
#FFFFFF	12.61	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#02386F

Deuteranopia (green-blind)

#002F6C

Tritanopia (blue-blind)

#003F49

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #10306d;
/* rgb */ color: rgb(16, 48, 109);
/* oklch */ color: oklch(32.6% 0.113 261.7);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#10306d",
  "rgb": {
    "r": 16,
    "g": 48,
    "b": 109
  },
  "hsl": {
    "h": 219.355,
    "s": 74.4,
    "l": 24.51
  },
  "oklch": {
    "l": 0.32628,
    "c": 0.11285,
    "h": 261.7
  },
  "luminance": 0.03328
}

Semantic roles & 50–950 ramp

primary

#10306D

secondary

#A57E34

accent

#B137F1

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#05060D

muted

#7A7A7E

Preview Lab

Preview with #10306D

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

Preview Lab → · Contrast checker → · Palette generator →