#10405B#10405B

#10405B is a dark, moderate cyan. Relative luminance 0.045; OKLCH L 35.4% C 0.068 H 238.3°. Best body text is #FFFFFF at 11.02:1 contrast (WCAG AA passes).

Color values

HEX	#10405B
RGB	rgb(16, 64, 91)
HSL	hsl(202, 70%, 21%)
HSV	hsv(202, 82%, 36%)
CMYK	cmyk(82.4%, 29.7%, 0%, 64.3%)
CIE-LAB	lab(25.36, -5.30, -20.59)
CIE-LCH	lch(25.36, 21.26, 255.58°)
OKLab	oklab(35.4% -0.036 -0.0582)
OKLCH	oklch(35.4% 0.068 238.3)
XYZ	xyz(3.9347, 4.5318, 10.5629)
Luminance	0.0453 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10405B #5B2B10

analogous

#105B50 #10405B #101A5B

triadic

#10405B #5B1040 #405B10

tetradic

#10405B #50105B #5B2B10 #1A5B10

square

#10405B #50105B #5B2B10 #1A5B10

split-complementary

#10405B #5B101A #5B5010

monochromatic

#05121A #071B27 #10405B #19658F #2289C3

Accessibility & contrast

On white

11.02

#10405B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#10405B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10405B

11.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10405B	#FFFFFF	#000000	##FFFFFF
##10405B	1.00	11.02	1.91	11.02
#FFFFFF	11.02	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	11.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#33405C

Deuteranopia (green-blind)

#29395B

Tritanopia (blue-blind)

#004749

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #10405b;
/* rgb */ color: rgb(16, 64, 91);
/* oklch */ color: oklch(35.4% 0.068 238.3);

Tailwind

colors: {
  custom: {
    50: '#5b7489',
    500: '#10405b',
    950: '#000000',
  },
}

SCSS

$custom: #10405b;
$custom-light: #5b7489;
$custom-dark: #000000;

JSON

{
  "hex": "#10405b",
  "rgb": {
    "r": 16,
    "g": 64,
    "b": 91
  },
  "hsl": {
    "h": 201.6,
    "s": 70.093,
    "l": 20.98
  },
  "oklch": {
    "l": 0.35397,
    "c": 0.0684,
    "h": 238.3
  },
  "luminance": 0.04532
}

Semantic roles & 50–950 ramp

primary

#10405B

secondary

#945633

accent

#7B3BED

background

#F5F7F8

surface

#E9EDF0

border

#C5C8CB

text

#04080B

muted

#797B7C

Preview Lab

Preview with #10405B

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

Preview Lab → · Contrast checker → · Palette generator →