#377DB8#377DB8

#377DB8 is a mid, moderate cyan. Relative luminance 0.189; OKLCH L 57.2% C 0.115 H 247.0°. Best body text is #000000 at 4.79:1 contrast (WCAG AA passes).

Color values

HEX	#377DB8
RGB	rgb(55, 125, 184)
HSL	hsl(207, 54%, 47%)
HSV	hsv(207, 70%, 72%)
CMYK	cmyk(70.1%, 32.1%, 0%, 27.8%)
CIE-LAB	lab(50.61, -2.37, -37.43)
CIE-LCH	lch(50.61, 37.51, 266.37°)
OKLab	oklab(57.25% -0.0449 -0.106)
OKLCH	oklch(57.25% 0.115 247)
XYZ	xyz(17.5576, 18.9382, 48.0682)
Luminance	0.1894 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377DB8 #B87237

analogous

#37B8B3 #377DB8 #373CB8

triadic

#377DB8 #B8377D #7DB837

tetradic

#377DB8 #B337B8 #B87237 #3CB837

square

#377DB8 #B337B8 #B87237 #3CB837

split-complementary

#377DB8 #B8373C #B8B337

monochromatic

#1B3D5A #295D89 #377DB8 #5D9BCF #8DB8DD

Accessibility & contrast

On white

4.39

#377DB8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.79

#377DB8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377DB8

4.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377DB8	#FFFFFF	#000000	##000000
##377DB8	1.00	4.39	4.79	4.79
#FFFFFF	4.39	1.00	21.00	21.00
#000000	4.79	21.00	1.00	1.00
##000000	4.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#637FBB

Deuteranopia (green-blind)

#5173B7

Tritanopia (blue-blind)

#008B92

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #377db8;
/* rgb */ color: rgb(55, 125, 184);
/* oklch */ color: oklch(57.2% 0.115 247.0);

Tailwind

colors: {
  custom: {
    50: '#7da2cd',
    500: '#377db8',
    950: '#000000',
  },
}

SCSS

$custom: #377db8;
$custom-light: #7da2cd;
$custom-dark: #000000;

JSON

{
  "hex": "#377db8",
  "rgb": {
    "r": 55,
    "g": 125,
    "b": 184
  },
  "hsl": {
    "h": 207.442,
    "s": 53.975,
    "l": 46.863
  },
  "oklch": {
    "l": 0.57248,
    "c": 0.11514,
    "h": 247
  },
  "luminance": 0.1894
}

Semantic roles & 50–950 ramp

primary

#377DB8

secondary

#C7A384

accent

#8E4ADD

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0F13

muted

#7C7E82

Preview Lab

Preview with #377DB8

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

Preview Lab → · Contrast checker → · Palette generator →