#15537C#15537C

#15537C is a dark, moderate cyan. Relative luminance 0.078; OKLCH L 42.5% C 0.091 H 243.0°. Best body text is #FFFFFF at 8.20:1 contrast (WCAG AA passes).

Color values

HEX	#15537C
RGB	rgb(21, 83, 124)
HSL	hsl(204, 71%, 28%)
HSV	hsv(204, 83%, 49%)
CMYK	cmyk(83.1%, 33.1%, 0%, 51.4%)
CIE-LAB	lab(33.56, -3.66, -28.61)
CIE-LCH	lch(33.56, 28.85, 262.71°)
OKLab	oklab(42.51% -0.0414 -0.0812)
OKLCH	oklch(42.51% 0.091 243)
XYZ	xyz(7.0392, 7.8003, 20.1995)
Luminance	0.0780 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#15537C #7C3E15

analogous

#157C71 #15537C #15207C

triadic

#15537C #7C1553 #537C15

tetradic

#15537C #71157C #7C3E15 #207C15

square

#15537C #71157C #7C3E15 #207C15

split-complementary

#15537C #7C1520 #7C7115

monochromatic

#04121A #0C3048 #15537C #1E76B0 #3097DC

Accessibility & contrast

On white

8.20

#15537C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#15537C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #15537C

8.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##15537C	#FFFFFF	#000000	##FFFFFF
##15537C	1.00	8.20	2.56	8.20
#FFFFFF	8.20	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#40547E

Deuteranopia (green-blind)

#314B7B

Tritanopia (blue-blind)

#005D62

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #15537c;
/* rgb */ color: rgb(21, 83, 124);
/* oklch */ color: oklch(42.5% 0.091 243.0);

Tailwind

colors: {
  custom: {
    50: '#6583a2',
    500: '#15537c',
    950: '#000000',
  },
}

SCSS

$custom: #15537c;
$custom-light: #6583a2;
$custom-dark: #000000;

JSON

{
  "hex": "#15537c",
  "rgb": {
    "r": 21,
    "g": 83,
    "b": 124
  },
  "hsl": {
    "h": 203.883,
    "s": 71.034,
    "l": 28.431
  },
  "oklch": {
    "l": 0.4251,
    "c": 0.09115,
    "h": 243
  },
  "luminance": 0.07801
}

Semantic roles & 50–950 ramp

primary

#15537C

secondary

#B16A3C

accent

#823AEE

background

#F6F7FA

surface

#EBEEF3

border

#C6C9CD

text

#060A0F

muted

#7A7C7F

Preview Lab

Preview with #15537C

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

Preview Lab → · Contrast checker → · Palette generator →