#10305F#10305F

#10305F is a dark, moderate blue. Relative luminance 0.030; OKLCH L 31.5% C 0.092 H 258.4°. Best body text is #FFFFFF at 13.04:1 contrast (WCAG AA passes).

Color values

HEX	#10305F
RGB	rgb(16, 48, 95)
HSL	hsl(216, 71%, 22%)
HSV	hsv(216, 83%, 37%)
CMYK	cmyk(83.2%, 49.5%, 0%, 62.7%)
CIE-LAB	lab(20.24, 7.48, -31.33)
CIE-LCH	lch(20.24, 32.21, 283.43°)
OKLab	oklab(31.47% -0.0185 -0.0899)
OKLCH	oklch(31.47% 0.092 258.4)
XYZ	xyz(3.3354, 3.0499, 11.2372)
Luminance	0.0305 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10305F #5F3F10

analogous

#10585F #10305F #18105F

triadic

#10305F #5F1030 #305F10

tetradic

#10305F #5F1058 #5F3F10 #105F18

square

#10305F #5F1058 #5F3F10 #105F18

split-complementary

#10305F #5F1810 #585F10

monochromatic

#040D1A #07162B #10305F #194A93 #2265C8

Accessibility & contrast

On white

13.04

#10305F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.61

#10305F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10305F

13.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10305F	#FFFFFF	#000000	##FFFFFF
##10305F	1.00	13.04	1.61	13.04
#FFFFFF	13.04	1.00	21.00	1.00
#000000	1.61	21.00	1.00	21.00
##FFFFFF	13.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#173561

Deuteranopia (green-blind)

#042D5E

Tritanopia (blue-blind)

#003B42

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #10305f;
/* rgb */ color: rgb(16, 48, 95);
/* oklch */ color: oklch(31.5% 0.092 258.4);

Tailwind

colors: {
  custom: {
    50: '#5c678d',
    500: '#10305f',
    950: '#000000',
  },
}

SCSS

$custom: #10305f;
$custom-light: #5c678d;
$custom-dark: #000000;

JSON

{
  "hex": "#10305f",
  "rgb": {
    "r": 16,
    "g": 48,
    "b": 95
  },
  "hsl": {
    "h": 215.696,
    "s": 71.171,
    "l": 21.765
  },
  "oklch": {
    "l": 0.31469,
    "c": 0.09179,
    "h": 258.4
  },
  "luminance": 0.0305
}

Semantic roles & 50–950 ramp

primary

#10305F

secondary

#986F33

accent

#A53AEE

background

#F5F6F8

surface

#E9EBF0

border

#C5C6CB

text

#05060C

muted

#797A7D

Preview Lab

Preview with #10305F

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

Preview Lab → · Contrast checker → · Palette generator →