#37577D#37577D

#37577D is a dark, moderate cyan. Relative luminance 0.091; OKLCH L 45.0% C 0.073 H 253.5°. Best body text is #FFFFFF at 7.44:1 contrast (WCAG AA passes).

Color values

HEX	#37577D
RGB	rgb(55, 87, 125)
HSL	hsl(213, 39%, 35%)
HSV	hsv(213, 56%, 49%)
CMYK	cmyk(56%, 30.4%, 0%, 51%)
CIE-LAB	lab(36.19, 0.23, -25.01)
CIE-LCH	lch(36.19, 25.01, 270.53°)
OKLab	oklab(44.96% -0.0208 -0.0703)
OKLCH	oklch(44.96% 0.073 253.5)
XYZ	xyz(8.6841, 9.1086, 20.6986)
Luminance	0.0911 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37577D #7D5D37

analogous

#377A7D #37577D #3A377D

triadic

#37577D #7D3757 #577D37

tetradic

#37577D #7D377A #7D5D37 #377D3A

square

#37577D #7D377A #7D5D37 #377D3A

split-complementary

#37577D #7D3A37 #7A7D37

monochromatic

#121C28 #243952 #37577D #4A75A7 #6F94C0

Accessibility & contrast

On white

7.44

#37577D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.82

#37577D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37577D

7.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37577D	#FFFFFF	#000000	##FFFFFF
##37577D	1.00	7.44	2.82	7.44
#FFFFFF	7.44	1.00	21.00	1.00
#000000	2.82	21.00	1.00	21.00
##FFFFFF	7.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#48597F

Deuteranopia (green-blind)

#3F527C

Tritanopia (blue-blind)

#0D6064

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #37577d;
/* rgb */ color: rgb(55, 87, 125);
/* oklch */ color: oklch(45.0% 0.073 253.5);

Tailwind

colors: {
  custom: {
    50: '#7386a3',
    500: '#37577d',
    950: '#000000',
  },
}

SCSS

$custom: #37577d;
$custom-light: #7386a3;
$custom-dark: #000000;

JSON

{
  "hex": "#37577d",
  "rgb": {
    "r": 55,
    "g": 87,
    "b": 125
  },
  "hsl": {
    "h": 212.571,
    "s": 38.889,
    "l": 35.294
  },
  "oklch": {
    "l": 0.4496,
    "c": 0.07329,
    "h": 253.5
  },
  "luminance": 0.09109
}

Semantic roles & 50–950 ramp

primary

#37577D

secondary

#A88B67

accent

#9959CF

background

#F7F8FA

surface

#EDEFF3

border

#C8CACD

text

#080B0F

muted

#7B7C7F

Preview Lab

Preview with #37577D

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

Preview Lab → · Contrast checker → · Palette generator →