#15637B#15637B

#15637B is a mid, moderate cyan. Relative luminance 0.105; OKLCH L 46.6% C 0.080 H 224.0°. Best body text is #FFFFFF at 6.77:1 contrast (WCAG AA passes).

Color values

HEX	#15637B
RGB	rgb(21, 99, 123)
HSL	hsl(194, 71%, 28%)
HSV	hsv(194, 83%, 48%)
CMYK	cmyk(82.9%, 19.5%, 0%, 51.8%)
CIE-LAB	lab(38.75, -13.75, -19.91)
CIE-LCH	lch(38.75, 24.20, 235.37°)
OKLab	oklab(46.62% -0.0579 -0.0558)
OKLCH	oklch(46.62% 0.08 224)
XYZ	xyz(8.3448, 10.5121, 20.3243)
Luminance	0.1051 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#15637B #7B2D15

analogous

#157B60 #15637B #15307B

triadic

#15637B #7B1563 #637B15

tetradic

#15637B #60157B #7B2D15 #307B15

square

#15637B #60157B #7B2D15 #307B15

split-complementary

#15637B #7B1530 #7B6015

monochromatic

#04151A #0C3947 #15637B #1E8DAF #2FB3DB

Accessibility & contrast

On white

6.77

#15637B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.10

#15637B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #15637B

6.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##15637B	#FFFFFF	#000000	##FFFFFF
##15637B	1.00	6.77	3.10	6.77
#FFFFFF	6.77	1.00	21.00	1.00
#000000	3.10	21.00	1.00	21.00
##FFFFFF	6.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#55617C

Deuteranopia (green-blind)

#48577B

Tritanopia (blue-blind)

#006A6B

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #15637b;
/* rgb */ color: rgb(21, 99, 123);
/* oklch */ color: oklch(46.6% 0.080 224.0);

Tailwind

colors: {
  custom: {
    50: '#668fa1',
    500: '#15637b',
    950: '#000000',
  },
}

SCSS

$custom: #15637b;
$custom-light: #668fa1;
$custom-dark: #000000;

JSON

{
  "hex": "#15637b",
  "rgb": {
    "r": 21,
    "g": 99,
    "b": 123
  },
  "hsl": {
    "h": 194.118,
    "s": 70.833,
    "l": 28.235
  },
  "oklch": {
    "l": 0.46624,
    "c": 0.08043,
    "h": 224
  },
  "luminance": 0.10513
}

Semantic roles & 50–950 ramp

primary

#15637B

secondary

#B0573B

accent

#643AEE

background

#F6F8F9

surface

#EBF0F2

border

#C6CBCC

text

#070C0F

muted

#7A7D7E

Preview Lab

Preview with #15637B

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

Preview Lab → · Contrast checker → · Palette generator →