#10365B#10365B

#10365B is a dark, moderate cyan. Relative luminance 0.035; OKLCH L 32.7% C 0.078 H 251.1°. Best body text is #FFFFFF at 12.35:1 contrast (WCAG AA passes).

Color values

HEX	#10365B
RGB	rgb(16, 54, 91)
HSL	hsl(210, 70%, 21%)
HSV	hsv(210, 82%, 36%)
CMYK	cmyk(82.4%, 40.7%, 0%, 64.3%)
CIE-LAB	lab(21.96, 1.47, -25.96)
CIE-LCH	lch(21.96, 26.00, 273.24°)
OKLab	oklab(32.71% -0.0254 -0.074)
OKLCH	oklch(32.71% 0.078 251.1)
XYZ	xyz(3.4205, 3.5034, 10.3915)
Luminance	0.0350 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10365B #5B3510

analogous

#105B5A #10365B #10105B

triadic

#10365B #5B1036 #365B10

tetradic

#10365B #5A105B #5B3510 #105B10

square

#10365B #5A105B #5B3510 #105B10

split-complementary

#10365B #5B1010 #5B5A10

monochromatic

#050F1A #071727 #10365B #19558F #2274C3

Accessibility & contrast

On white

12.35

#10365B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#10365B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10365B

12.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10365B	#FFFFFF	#000000	##FFFFFF
##10365B	1.00	12.35	1.70	12.35
#FFFFFF	12.35	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#25385D

Deuteranopia (green-blind)

#19315A

Tritanopia (blue-blind)

#003F44

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #10365b;
/* rgb */ color: rgb(16, 54, 91);
/* oklch */ color: oklch(32.7% 0.078 251.1);

Tailwind

colors: {
  custom: {
    50: '#5b6c89',
    500: '#10365b',
    950: '#000000',
  },
}

SCSS

$custom: #10365b;
$custom-light: #5b6c89;
$custom-dark: #000000;

JSON

{
  "hex": "#10365b",
  "rgb": {
    "r": 16,
    "g": 54,
    "b": 91
  },
  "hsl": {
    "h": 209.6,
    "s": 70.093,
    "l": 20.98
  },
  "oklch": {
    "l": 0.32715,
    "c": 0.07823,
    "h": 251.1
  },
  "luminance": 0.03504
}

Semantic roles & 50–950 ramp

primary

#10365B

secondary

#946333

accent

#933BED

background

#F5F6F8

surface

#E9EBF0

border

#C5C6CB

text

#04070B

muted

#797A7C

Preview Lab

Preview with #10365B

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

Preview Lab → · Contrast checker → · Palette generator →