#10305D#10305D

#10305D is a dark, moderate blue. Relative luminance 0.030; OKLCH L 31.3% C 0.089 H 257.7°. Best body text is #FFFFFF at 13.10:1 contrast (WCAG AA passes).

Color values

HEX	#10305D
RGB	rgb(16, 48, 93)
HSL	hsl(215, 71%, 21%)
HSV	hsv(215, 83%, 36%)
CMYK	cmyk(82.8%, 48.4%, 0%, 63.5%)
CIE-LAB	lab(20.10, 6.61, -30.24)
CIE-LCH	lch(20.10, 30.95, 282.34°)
OKLab	oklab(31.31% -0.0189 -0.0867)
OKLCH	oklch(31.31% 0.089 257.7)
XYZ	xyz(3.2457, 3.0140, 10.7645)
Luminance	0.0301 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10305D #5D3D10

analogous

#10575D #10305D #17105D

triadic

#10305D #5D1030 #305D10

tetradic

#10305D #5D1057 #5D3D10 #105D17

square

#10305D #5D1057 #5D3D10 #105D17

split-complementary

#10305D #5D1710 #575D10

monochromatic

#040D1A #071529 #10305D #194B91 #2266C5

Accessibility & contrast

On white

13.10

#10305D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#10305D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10305D

13.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10305D	#FFFFFF	#000000	##FFFFFF
##10305D	1.00	13.10	1.60	13.10
#FFFFFF	13.10	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#19345F

Deuteranopia (green-blind)

#082D5C

Tritanopia (blue-blind)

#003B42

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #10305d;
/* rgb */ color: rgb(16, 48, 93);
/* oklch */ color: oklch(31.3% 0.089 257.7);

Tailwind

colors: {
  custom: {
    50: '#5c678b',
    500: '#10305d',
    950: '#000000',
  },
}

SCSS

$custom: #10305d;
$custom-light: #5c678b;
$custom-dark: #000000;

JSON

{
  "hex": "#10305d",
  "rgb": {
    "r": 16,
    "g": 48,
    "b": 93
  },
  "hsl": {
    "h": 215.065,
    "s": 70.642,
    "l": 21.373
  },
  "oklch": {
    "l": 0.31313,
    "c": 0.08874,
    "h": 257.7
  },
  "luminance": 0.03014
}

Semantic roles & 50–950 ramp

primary

#10305D

secondary

#966D33

accent

#A33AED

background

#F5F6F8

surface

#E9EBF0

border

#C5C6CB

text

#04060C

muted

#797A7D

Preview Lab

Preview with #10305D

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

Preview Lab → · Contrast checker → · Palette generator →