#37599B#37599B

#37599B is a mid, moderate blue. Relative luminance 0.103; OKLCH L 47.2% C 0.114 H 262.3°. Best body text is #FFFFFF at 6.85:1 contrast (WCAG AA passes).

Color values

HEX	#37599B
RGB	rgb(55, 89, 155)
HSL	hsl(220, 48%, 41%)
HSV	hsv(220, 65%, 61%)
CMYK	cmyk(64.5%, 42.6%, 0%, 39.2%)
CIE-LAB	lab(38.42, 9.57, -39.72)
CIE-LCH	lch(38.42, 40.86, 283.55°)
OKLab	oklab(47.22% -0.0152 -0.1132)
OKLCH	oklch(47.22% 0.114 262.3)
XYZ	xyz(11.0622, 10.3225, 32.4135)
Luminance	0.1032 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37599B #9B7937

analogous

#378B9B #37599B #47379B

triadic

#37599B #9B3759 #599B37

tetradic

#37599B #9B378B #9B7937 #379B47

square

#37599B #9B378B #9B7937 #379B47

split-complementary

#37599B #9B4737 #8B9B37

monochromatic

#172541 #273F6E #37599B #4F75C0 #7C99D0

Accessibility & contrast

On white

6.85

#37599B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.06

#37599B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #37599B

6.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37599B	#FFFFFF	#000000	##FFFFFF
##37599B	1.00	6.85	3.06	6.85
#FFFFFF	6.85	1.00	21.00	1.00
#000000	3.06	21.00	1.00	21.00
##FFFFFF	6.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B5F9E

Deuteranopia (green-blind)

#2C569A

Tritanopia (blue-blind)

#006872

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #37599b;
/* rgb */ color: rgb(55, 89, 155);
/* oklch */ color: oklch(47.2% 0.114 262.3);

Tailwind

colors: {
  custom: {
    50: '#7887b9',
    500: '#37599b',
    950: '#000000',
  },
}

SCSS

$custom: #37599b;
$custom-light: #7887b9;
$custom-dark: #000000;

JSON

{
  "hex": "#37599b",
  "rgb": {
    "r": 55,
    "g": 89,
    "b": 155
  },
  "hsl": {
    "h": 219.6,
    "s": 47.619,
    "l": 41.176
  },
  "oklch": {
    "l": 0.47219,
    "c": 0.1142,
    "h": 262.3
  },
  "luminance": 0.10324
}

Semantic roles & 50–950 ramp

primary

#37599B

secondary

#BAA274

accent

#A951D7

background

#F7F8FB

surface

#EEEFF6

border

#C9CAD0

text

#0A0B11

muted

#7C7C80

Preview Lab

Preview with #37599B

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

Preview Lab → · Contrast checker → · Palette generator →