#37458B#37458B

#37458B is a dark, moderate blue. Relative luminance 0.069; OKLCH L 41.7% C 0.117 H 271.9°. Best body text is #FFFFFF at 8.80:1 contrast (WCAG AA passes).

Color values

HEX	#37458B
RGB	rgb(55, 69, 139)
HSL	hsl(230, 43%, 38%)
HSV	hsv(230, 60%, 55%)
CMYK	cmyk(60.4%, 50.4%, 0%, 45.5%)
CIE-LAB	lab(31.65, 16.99, -40.83)
CIE-LCH	lch(31.65, 44.22, 292.59°)
OKLab	oklab(41.72% 0.0039 -0.1167)
OKLCH	oklch(41.72% 0.117 271.9)
XYZ	xyz(8.3623, 6.9319, 25.3184)
Luminance	0.0693 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37458B #8B7D37

analogous

#376F8B #37458B #53378B

triadic

#37458B #8B3745 #458B37

tetradic

#37458B #8B376F #8B7D37 #378B53

square

#37458B #8B376F #8B7D37 #378B53

split-complementary

#37458B #8B5337 #6F8B37

monochromatic

#141933 #262F5F #37458B #485BB7 #7482C8

Accessibility & contrast

On white

8.80

#37458B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#37458B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37458B

8.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37458B	#FFFFFF	#000000	##FFFFFF
##37458B	1.00	8.80	2.39	8.80
#FFFFFF	8.80	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#214E8E

Deuteranopia (green-blind)

#13478A

Tritanopia (blue-blind)

#005561

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #37458b;
/* rgb */ color: rgb(55, 69, 139);
/* oklch */ color: oklch(41.7% 0.117 271.9);

Tailwind

colors: {
  custom: {
    50: '#7678ad',
    500: '#37458b',
    950: '#000000',
  },
}

SCSS

$custom: #37458b;
$custom-light: #7678ad;
$custom-dark: #000000;

JSON

{
  "hex": "#37458b",
  "rgb": {
    "r": 55,
    "g": 69,
    "b": 139
  },
  "hsl": {
    "h": 230,
    "s": 43.299,
    "l": 38.039
  },
  "oklch": {
    "l": 0.41716,
    "c": 0.11677,
    "h": 271.9
  },
  "luminance": 0.06933
}

Semantic roles & 50–950 ramp

primary

#37458B

secondary

#B1A66D

accent

#BE55D3

background

#F7F7FA

surface

#EDEDF4

border

#C8C8CE

text

#090810

muted

#7B7B7F

Preview Lab

Preview with #37458B

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

Preview Lab → · Contrast checker → · Palette generator →