#37589E#37589E

#37589E is a mid, moderate blue. Relative luminance 0.103; OKLCH L 47.2% C 0.120 H 263.5°. Best body text is #FFFFFF at 6.88:1 contrast (WCAG AA passes).

Color values

HEX	#37589E
RGB	rgb(55, 88, 158)
HSL	hsl(221, 48%, 42%)
HSV	hsv(221, 65%, 62%)
CMYK	cmyk(65.2%, 44.3%, 0%, 38%)
CIE-LAB	lab(38.30, 11.31, -41.70)
CIE-LCH	lch(38.30, 43.21, 285.18°)
OKLab	oklab(47.19% -0.0136 -0.119)
OKLCH	oklch(47.19% 0.12 263.5)
XYZ	xyz(11.2347, 10.2593, 33.7293)
Luminance	0.1026 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37589E #9E7D37

analogous

#378C9E #37589E #4A379E

triadic

#37589E #9E3758 #589E37

tetradic

#37589E #9E378C #9E7D37 #379E4A

square

#37589E #9E378C #9E7D37 #379E4A

split-complementary

#37589E #9E4A37 #8C9E37

monochromatic

#172543 #273F71 #37589E #5075C2 #7D99D2

Accessibility & contrast

On white

6.88

#37589E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.05

#37589E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #37589E

6.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37589E	#FFFFFF	#000000	##FFFFFF
##37589E	1.00	6.88	3.05	6.88
#FFFFFF	6.88	1.00	21.00	1.00
#000000	3.05	21.00	1.00	21.00
##FFFFFF	6.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#375FA1

Deuteranopia (green-blind)

#27569D

Tritanopia (blue-blind)

#006873

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #37589e;
/* rgb */ color: rgb(55, 88, 158);
/* oklch */ color: oklch(47.2% 0.120 263.5);

Tailwind

colors: {
  custom: {
    50: '#7886bb',
    500: '#37589e',
    950: '#000000',
  },
}

SCSS

$custom: #37589e;
$custom-light: #7886bb;
$custom-dark: #000000;

JSON

{
  "hex": "#37589e",
  "rgb": {
    "r": 55,
    "g": 88,
    "b": 158
  },
  "hsl": {
    "h": 220.777,
    "s": 48.357,
    "l": 41.765
  },
  "oklch": {
    "l": 0.47191,
    "c": 0.11977,
    "h": 263.5
  },
  "luminance": 0.1026
}

Semantic roles & 50–950 ramp

primary

#37589E

secondary

#BBA576

accent

#AC50D8

background

#F7F8FB

surface

#EEEFF6

border

#C9CAD0

text

#0A0B12

muted

#7C7C81

Preview Lab

Preview with #37589E

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

Preview Lab → · Contrast checker → · Palette generator →