#15405B#15405B

#15405B is a dark, moderate cyan. Relative luminance 0.046; OKLCH L 35.6% C 0.066 H 240.1°. Best body text is #FFFFFF at 10.96:1 contrast (WCAG AA passes).

Color values

HEX	#15405B
RGB	rgb(21, 64, 91)
HSL	hsl(203, 63%, 22%)
HSV	hsv(203, 77%, 36%)
CMYK	cmyk(76.9%, 29.7%, 0%, 64.3%)
CIE-LAB	lab(25.51, -4.55, -20.35)
CIE-LCH	lch(25.51, 20.85, 257.39°)
OKLab	oklab(35.56% -0.033 -0.0574)
OKLCH	oklch(35.56% 0.066 240.1)
XYZ	xyz(4.0302, 4.5811, 10.5673)
Luminance	0.0458 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#15405B #5B3015

analogous

#155B53 #15405B #151D5B

triadic

#15405B #5B1540 #405B15

tetradic

#15405B #53155B #5B3015 #1D5B15

square

#15405B #53155B #5B3015 #1D5B15

split-complementary

#15405B #5B151D #5B5315

monochromatic

#061119 #0A1D29 #15405B #20638D #2C86BE

Accessibility & contrast

On white

10.96

#15405B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#15405B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #15405B

10.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##15405B	#FFFFFF	#000000	##FFFFFF
##15405B	1.00	10.96	1.92	10.96
#FFFFFF	10.96	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#33405C

Deuteranopia (green-blind)

#2A395B

Tritanopia (blue-blind)

#004749

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #15405b;
/* rgb */ color: rgb(21, 64, 91);
/* oklch */ color: oklch(35.6% 0.066 240.1);

Tailwind

colors: {
  custom: {
    50: '#5d7489',
    500: '#15405b',
    950: '#000000',
  },
}

SCSS

$custom: #15405b;
$custom-light: #5d7489;
$custom-dark: #000000;

JSON

{
  "hex": "#15405b",
  "rgb": {
    "r": 21,
    "g": 64,
    "b": 91
  },
  "hsl": {
    "h": 203.143,
    "s": 62.5,
    "l": 21.961
  },
  "oklch": {
    "l": 0.35558,
    "c": 0.06624,
    "h": 240.1
  },
  "luminance": 0.04582
}

Semantic roles & 50–950 ramp

primary

#15405B

secondary

#925C39

accent

#8142E6

background

#F5F7F8

surface

#E9EDF0

border

#C5C8CB

text

#05080B

muted

#797B7C

Preview Lab

Preview with #15405B

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

Preview Lab → · Contrast checker → · Palette generator →