#12637B#12637B

#12637B is a mid, moderate cyan. Relative luminance 0.105; OKLCH L 46.6% C 0.081 H 223.6°. Best body text is #FFFFFF at 6.78:1 contrast (WCAG AA passes).

Color values

HEX	#12637B
RGB	rgb(18, 99, 123)
HSL	hsl(194, 74%, 28%)
HSV	hsv(194, 85%, 48%)
CMYK	cmyk(85.4%, 19.5%, 0%, 51.8%)
CIE-LAB	lab(38.69, -14.05, -20.00)
CIE-LCH	lch(38.69, 24.44, 234.91°)
OKLab	oklab(46.57% -0.059 -0.0561)
OKLCH	oklch(46.57% 0.081 223.6)
XYZ	xyz(8.2849, 10.4813, 20.3215)
Luminance	0.1048 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12637B #7B2A12

analogous

#127B5E #12637B #122F7B

triadic

#12637B #7B1263 #637B12

tetradic

#12637B #5E127B #7B2A12 #2F7B12

square

#12637B #5E127B #7B2A12 #2F7B12

split-complementary

#12637B #7B122F #7B5E12

monochromatic

#04151B #0A3846 #12637B #1A8EB0 #28B6E0

Accessibility & contrast

On white

6.78

#12637B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.10

#12637B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #12637B

6.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12637B	#FFFFFF	#000000	##FFFFFF
##12637B	1.00	6.78	3.10	6.78
#FFFFFF	6.78	1.00	21.00	1.00
#000000	3.10	21.00	1.00	21.00
##FFFFFF	6.78	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: #12637b;
/* rgb */ color: rgb(18, 99, 123);
/* oklch */ color: oklch(46.6% 0.081 223.6);

Tailwind

colors: {
  custom: {
    50: '#658fa1',
    500: '#12637b',
    950: '#000000',
  },
}

SCSS

$custom: #12637b;
$custom-light: #658fa1;
$custom-dark: #000000;

JSON

{
  "hex": "#12637b",
  "rgb": {
    "r": 18,
    "g": 99,
    "b": 123
  },
  "hsl": {
    "h": 193.714,
    "s": 74.468,
    "l": 27.647
  },
  "oklch": {
    "l": 0.46566,
    "c": 0.08141,
    "h": 223.6
  },
  "luminance": 0.10482
}

Semantic roles & 50–950 ramp

primary

#12637B

secondary

#B15338

accent

#6137F1

background

#F6F8F9

surface

#EBF0F2

border

#C6CBCC

text

#070C0F

muted

#7A7D7E

Preview Lab

Preview with #12637B

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

Preview Lab → · Contrast checker → · Palette generator →