#37639B#37639B

#37639B is a mid, moderate cyan. Relative luminance 0.121; OKLCH L 49.5% C 0.103 H 255.3°. Best body text is #FFFFFF at 6.14:1 contrast (WCAG AA passes).

Color values

HEX	#37639B
RGB	rgb(55, 99, 155)
HSL	hsl(214, 48%, 41%)
HSV	hsv(214, 65%, 61%)
CMYK	cmyk(64.5%, 36.1%, 0%, 39.2%)
CIE-LAB	lab(41.38, 3.18, -35.02)
CIE-LCH	lch(41.38, 35.17, 275.19°)
OKLab	oklab(49.52% -0.026 -0.0993)
OKLCH	oklch(49.52% 0.103 255.3)
XYZ	xyz(11.9517, 12.1013, 32.7099)
Luminance	0.1210 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37639B #9B6F37

analogous

#37959B #37639B #3D379B

triadic

#37639B #9B3763 #639B37

tetradic

#37639B #9B3795 #9B6F37 #379B3D

square

#37639B #9B3795 #9B6F37 #379B3D

split-complementary

#37639B #9B3D37 #959B37

monochromatic

#172941 #27466E #37639B #4F81C0 #7CA1D0

Accessibility & contrast

On white

6.14

#37639B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.42

#37639B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #37639B

6.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37639B	#FFFFFF	#000000	##FFFFFF
##37639B	1.00	6.14	3.42	6.14
#FFFFFF	6.14	1.00	21.00	1.00
#000000	3.42	21.00	1.00	21.00
##FFFFFF	6.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B679D

Deuteranopia (green-blind)

#3D5D9A

Tritanopia (blue-blind)

#007077

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #37639b;
/* rgb */ color: rgb(55, 99, 155);
/* oklch */ color: oklch(49.5% 0.103 255.3);

Tailwind

colors: {
  custom: {
    50: '#788fb9',
    500: '#37639b',
    950: '#000000',
  },
}

SCSS

$custom: #37639b;
$custom-light: #788fb9;
$custom-dark: #000000;

JSON

{
  "hex": "#37639b",
  "rgb": {
    "r": 55,
    "g": 99,
    "b": 155
  },
  "hsl": {
    "h": 213.6,
    "s": 47.619,
    "l": 41.176
  },
  "oklch": {
    "l": 0.49518,
    "c": 0.10265,
    "h": 255.3
  },
  "luminance": 0.12102
}

Semantic roles & 50–950 ramp

primary

#37639B

secondary

#BA9B74

accent

#9C51D7

background

#F7F8FB

surface

#EEF0F6

border

#C9CBD0

text

#0A0C11

muted

#7C7D80

Preview Lab

Preview with #37639B

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

Preview Lab → · Contrast checker → · Palette generator →