#10305E#10305E

#10305E is a dark, moderate blue. Relative luminance 0.030; OKLCH L 31.4% C 0.090 H 258.0°. Best body text is #FFFFFF at 13.07:1 contrast (WCAG AA passes).

Color values

HEX	#10305E
RGB	rgb(16, 48, 94)
HSL	hsl(215, 71%, 22%)
HSV	hsv(215, 83%, 37%)
CMYK	cmyk(83%, 48.9%, 0%, 63.1%)
CIE-LAB	lab(20.17, 7.05, -30.78)
CIE-LCH	lch(20.17, 31.58, 282.89°)
OKLab	oklab(31.39% -0.0187 -0.0883)
OKLCH	oklch(31.39% 0.09 258)
XYZ	xyz(3.2903, 3.0318, 10.9993)
Luminance	0.0303 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10305E #5E3E10

analogous

#10575E #10305E #17105E

triadic

#10305E #5E1030 #305E10

tetradic

#10305E #5E1057 #5E3E10 #105E17

square

#10305E #5E1057 #5E3E10 #105E17

split-complementary

#10305E #5E1710 #575E10

monochromatic

#040D1A #07152A #10305E #194B92 #2265C7

Accessibility & contrast

On white

13.07

#10305E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.61

#10305E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10305E

13.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10305E	#FFFFFF	#000000	##FFFFFF
##10305E	1.00	13.07	1.61	13.07
#FFFFFF	13.07	1.00	21.00	1.00
#000000	1.61	21.00	1.00	21.00
##FFFFFF	13.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#183460

Deuteranopia (green-blind)

#062D5D

Tritanopia (blue-blind)

#003B42

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #10305e;
/* rgb */ color: rgb(16, 48, 94);
/* oklch */ color: oklch(31.4% 0.090 258.0);

Tailwind

colors: {
  custom: {
    50: '#5c678c',
    500: '#10305e',
    950: '#000000',
  },
}

SCSS

$custom: #10305e;
$custom-light: #5c678c;
$custom-dark: #000000;

JSON

{
  "hex": "#10305e",
  "rgb": {
    "r": 16,
    "g": 48,
    "b": 94
  },
  "hsl": {
    "h": 215.385,
    "s": 70.909,
    "l": 21.569
  },
  "oklch": {
    "l": 0.31391,
    "c": 0.09026,
    "h": 258
  },
  "luminance": 0.03032
}

Semantic roles & 50–950 ramp

primary

#10305E

secondary

#976E33

accent

#A43AEE

background

#F5F6F8

surface

#E9EBF0

border

#C5C6CB

text

#05060C

muted

#797A7D

Preview Lab

Preview with #10305E

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

Preview Lab → · Contrast checker → · Palette generator →