#37599D#37599D

#37599D is a mid, moderate blue. Relative luminance 0.104; OKLCH L 47.3% C 0.117 H 262.7°. Best body text is #FFFFFF at 6.82:1 contrast (WCAG AA passes).

Color values

HEX	#37599D
RGB	rgb(55, 89, 157)
HSL	hsl(220, 48%, 42%)
HSV	hsv(220, 65%, 62%)
CMYK	cmyk(65%, 43.3%, 0%, 38.4%)
CIE-LAB	lab(38.53, 10.30, -40.73)
CIE-LCH	lch(38.53, 42.01, 284.19°)
OKLab	oklab(47.35% -0.0148 -0.1161)
OKLCH	oklch(47.35% 0.117 262.7)
XYZ	xyz(11.2316, 10.3903, 33.3054)
Luminance	0.1039 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37599D #9D7B37

analogous

#378C9D #37599D #48379D

triadic

#37599D #9D3759 #599D37

tetradic

#37599D #9D378C #9D7B37 #379D48

square

#37599D #9D378C #9D7B37 #379D48

split-complementary

#37599D #9D4837 #8C9D37

monochromatic

#172642 #273F70 #37599D #5076C2 #7D99D1

Accessibility & contrast

On white

6.82

#37599D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.08

#37599D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #37599D

6.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37599D	#FFFFFF	#000000	##FFFFFF
##37599D	1.00	6.82	3.08	6.82
#FFFFFF	6.82	1.00	21.00	1.00
#000000	3.08	21.00	1.00	21.00
##FFFFFF	6.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A60A0

Deuteranopia (green-blind)

#2A569C

Tritanopia (blue-blind)

#006873

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #37599d;
/* rgb */ color: rgb(55, 89, 157);
/* oklch */ color: oklch(47.3% 0.117 262.7);

Tailwind

colors: {
  custom: {
    50: '#7887ba',
    500: '#37599d',
    950: '#000000',
  },
}

SCSS

$custom: #37599d;
$custom-light: #7887ba;
$custom-dark: #000000;

JSON

{
  "hex": "#37599d",
  "rgb": {
    "r": 55,
    "g": 89,
    "b": 157
  },
  "hsl": {
    "h": 220,
    "s": 48.113,
    "l": 41.569
  },
  "oklch": {
    "l": 0.47349,
    "c": 0.11709,
    "h": 262.7
  },
  "luminance": 0.10391
}

Semantic roles & 50–950 ramp

primary

#37599D

secondary

#BBA375

accent

#AA50D8

background

#F7F8FB

surface

#EEEFF6

border

#C9CAD0

text

#0A0B12

muted

#7C7C81

Preview Lab

Preview with #37599D

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

Preview Lab → · Contrast checker → · Palette generator →