#37637B#37637B

#37637B is a mid, moderate cyan. Relative luminance 0.112; OKLCH L 47.8% C 0.062 H 234.0°. Best body text is #FFFFFF at 6.50:1 contrast (WCAG AA passes).

Color values

HEX	#37637B
RGB	rgb(55, 99, 123)
HSL	hsl(201, 38%, 35%)
HSV	hsv(201, 55%, 48%)
CMYK	cmyk(55.3%, 19.5%, 0%, 51.8%)
CIE-LAB	lab(39.86, -7.82, -18.11)
CIE-LCH	lch(39.86, 19.72, 246.64°)
OKLab	oklab(47.82% -0.0366 -0.0504)
OKLCH	oklch(47.82% 0.062 234)
XYZ	xyz(9.6112, 11.1652, 20.3837)
Luminance	0.1117 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37637B #7B4F37

analogous

#377B71 #37637B #37417B

triadic

#37637B #7B3763 #637B37

tetradic

#37637B #71377B #7B4F37 #417B37

square

#37637B #71377B #7B4F37 #417B37

split-complementary

#37637B #7B3741 #7B7137

monochromatic

#111F26 #244151 #37637B #4A85A5 #6EA2BE

Accessibility & contrast

On white

6.50

#37637B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.23

#37637B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #37637B

6.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37637B	#FFFFFF	#000000	##FFFFFF
##37637B	1.00	6.50	3.23	6.50
#FFFFFF	6.50	1.00	21.00	1.00
#000000	3.23	21.00	1.00	21.00
##FFFFFF	6.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#58627C

Deuteranopia (green-blind)

#4E5B7B

Tritanopia (blue-blind)

#0A696B

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #37637b;
/* rgb */ color: rgb(55, 99, 123);
/* oklch */ color: oklch(47.8% 0.062 234.0);

Tailwind

colors: {
  custom: {
    50: '#738fa1',
    500: '#37637b',
    950: '#000000',
  },
}

SCSS

$custom: #37637b;
$custom-light: #738fa1;
$custom-dark: #000000;

JSON

{
  "hex": "#37637b",
  "rgb": {
    "r": 55,
    "g": 99,
    "b": 123
  },
  "hsl": {
    "h": 201.176,
    "s": 38.202,
    "l": 34.902
  },
  "oklch": {
    "l": 0.47822,
    "c": 0.06229,
    "h": 234
  },
  "luminance": 0.11166
}

Semantic roles & 50–950 ramp

primary

#37637B

secondary

#A77D67

accent

#835ACE

background

#F7F8F9

surface

#EDF0F2

border

#C8CBCC

text

#080C0F

muted

#7B7D7E

Preview Lab

Preview with #37637B

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

Preview Lab → · Contrast checker → · Palette generator →