#15404B#15404B

#15404B is a dark, muted cyan. Relative luminance 0.043; OKLCH L 34.7% C 0.050 H 217.7°. Best body text is #FFFFFF at 11.25:1 contrast (WCAG AA passes).

Color values

HEX	#15404B
RGB	rgb(21, 64, 75)
HSL	hsl(192, 56%, 19%)
HSV	hsv(192, 72%, 29%)
CMYK	cmyk(72%, 14.7%, 0%, 70.6%)
CIE-LAB	lab(24.75, -10.69, -11.04)
CIE-LCH	lch(24.75, 15.37, 225.93°)
OKLab	oklab(34.7% -0.0397 -0.0307)
OKLCH	oklch(34.7% 0.05 217.7)
XYZ	xyz(3.4121, 4.3339, 7.3119)
Luminance	0.0433 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#15404B #4B2015

analogous

#154B3B #15404B #15254B

triadic

#15404B #4B1540 #404B15

tetradic

#15404B #3B154B #4B2015 #254B15

square

#15404B #3B154B #4B2015 #254B15

split-complementary

#15404B #4B1525 #4B3B15

monochromatic

#071418 #08171B #15404B #22697B #3092AB

Accessibility & contrast

On white

11.25

#15404B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#15404B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #15404B

11.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##15404B	#FFFFFF	#000000	##FFFFFF
##15404B	1.00	11.25	1.87	11.25
#FFFFFF	11.25	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#393E4C

Deuteranopia (green-blind)

#31384B

Tritanopia (blue-blind)

#004443

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #15404b;
/* rgb */ color: rgb(21, 64, 75);
/* oklch */ color: oklch(34.7% 0.050 217.7);

Tailwind

colors: {
  custom: {
    50: '#5a757d',
    500: '#15404b',
    950: '#000000',
  },
}

SCSS

$custom: #15404b;
$custom-light: #5a757d;
$custom-dark: #000000;

JSON

{
  "hex": "#15404b",
  "rgb": {
    "r": 21,
    "g": 64,
    "b": 75
  },
  "hsl": {
    "h": 192.222,
    "s": 56.25,
    "l": 18.824
  },
  "oklch": {
    "l": 0.347,
    "c": 0.05022,
    "h": 217.7
  },
  "luminance": 0.04334
}

Semantic roles & 50–950 ramp

primary

#15404B

secondary

#834839

accent

#6748E0

background

#F5F7F7

surface

#E9EDEE

border

#C5C8C9

text

#040809

muted

#797B7B

Preview Lab

Preview with #15404B

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

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