#37537C#37537C

#37537C is a dark, moderate blue. Relative luminance 0.085; OKLCH L 43.9% C 0.076 H 257.8°. Best body text is #FFFFFF at 7.80:1 contrast (WCAG AA passes).

Color values

HEX	#37537C
RGB	rgb(55, 83, 124)
HSL	hsl(216, 39%, 35%)
HSV	hsv(216, 56%, 49%)
CMYK	cmyk(55.6%, 33.1%, 0%, 51.4%)
CIE-LAB	lab(34.91, 2.44, -26.40)
CIE-LCH	lch(34.91, 26.52, 275.28°)
OKLab	oklab(43.94% -0.016 -0.0743)
OKLCH	oklch(43.94% 0.076 257.8)
XYZ	xyz(8.3056, 8.4533, 20.2589)
Luminance	0.0845 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37537C #7C6037

analogous

#37757C #37537C #3E377C

triadic

#37537C #7C3753 #537C37

tetradic

#37537C #7C3775 #7C6037 #377C3E

square

#37537C #7C3775 #7C6037 #377C3E

split-complementary

#37537C #7C3E37 #757C37

monochromatic

#111A27 #243752 #37537C #4A6FA6 #6E8FBF

Accessibility & contrast

On white

7.80

#37537C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#37537C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37537C

7.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37537C	#FFFFFF	#000000	##FFFFFF
##37537C	1.00	7.80	2.69	7.80
#FFFFFF	7.80	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#43567E

Deuteranopia (green-blind)

#3A4F7B

Tritanopia (blue-blind)

#105C62

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #37537c;
/* rgb */ color: rgb(55, 83, 124);
/* oklch */ color: oklch(43.9% 0.076 257.8);

Tailwind

colors: {
  custom: {
    50: '#7383a2',
    500: '#37537c',
    950: '#000000',
  },
}

SCSS

$custom: #37537c;
$custom-light: #7383a2;
$custom-dark: #000000;

JSON

{
  "hex": "#37537c",
  "rgb": {
    "r": 55,
    "g": 83,
    "b": 124
  },
  "hsl": {
    "h": 215.652,
    "s": 38.547,
    "l": 35.098
  },
  "oklch": {
    "l": 0.4394,
    "c": 0.07605,
    "h": 257.8
  },
  "luminance": 0.08454
}

Semantic roles & 50–950 ramp

primary

#37537C

secondary

#A88D67

accent

#9F59CE

background

#F7F7FA

surface

#EDEEF3

border

#C8C9CD

text

#080A0F

muted

#7B7C7F

Preview Lab

Preview with #37537C

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

Preview Lab → · Contrast checker → · Palette generator →