#10305B#10305B

#10305B is a dark, moderate cyan. Relative luminance 0.030; OKLCH L 31.2% C 0.086 H 256.9°. Best body text is #FFFFFF at 13.16:1 contrast (WCAG AA passes).

Color values

HEX	#10305B
RGB	rgb(16, 48, 91)
HSL	hsl(214, 70%, 21%)
HSV	hsv(214, 82%, 36%)
CMYK	cmyk(82.4%, 47.3%, 0%, 64.3%)
CIE-LAB	lab(19.96, 5.75, -29.14)
CIE-LCH	lch(19.96, 29.70, 281.16°)
OKLab	oklab(31.16% -0.0194 -0.0835)
OKLCH	oklch(31.16% 0.086 256.9)
XYZ	xyz(3.1583, 2.9790, 10.3041)
Luminance	0.0298 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10305B #5B3B10

analogous

#10555B #10305B #15105B

triadic

#10305B #5B1030 #305B10

tetradic

#10305B #5B1055 #5B3B10 #105B15

square

#10305B #5B1055 #5B3B10 #105B15

split-complementary

#10305B #5B1510 #555B10

monochromatic

#050E1A #071527 #10305B #194B8F #2267C3

Accessibility & contrast

On white

13.16

#10305B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#10305B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10305B

13.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10305B	#FFFFFF	#000000	##FFFFFF
##10305B	1.00	13.16	1.60	13.16
#FFFFFF	13.16	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A345D

Deuteranopia (green-blind)

#0B2D5A

Tritanopia (blue-blind)

#003A41

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #10305b;
/* rgb */ color: rgb(16, 48, 91);
/* oklch */ color: oklch(31.2% 0.086 256.9);

Tailwind

colors: {
  custom: {
    50: '#5b678a',
    500: '#10305b',
    950: '#000000',
  },
}

SCSS

$custom: #10305b;
$custom-light: #5b678a;
$custom-dark: #000000;

JSON

{
  "hex": "#10305b",
  "rgb": {
    "r": 16,
    "g": 48,
    "b": 91
  },
  "hsl": {
    "h": 214.4,
    "s": 70.093,
    "l": 20.98
  },
  "oklch": {
    "l": 0.3116,
    "c": 0.08569,
    "h": 256.9
  },
  "luminance": 0.02979
}

Semantic roles & 50–950 ramp

primary

#10305B

secondary

#946B33

accent

#A13BED

background

#F5F6F8

surface

#E9EBF0

border

#C5C6CB

text

#04060B

muted

#797A7C

Preview Lab

Preview with #10305B

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

Preview Lab → · Contrast checker → · Palette generator →