#377FB8#377FB8

#377FB8 is a mid, moderate cyan. Relative luminance 0.195; OKLCH L 57.7% C 0.113 H 245.6°. Best body text is #000000 at 4.89:1 contrast (WCAG AA passes).

Color values

HEX	#377FB8
RGB	rgb(55, 127, 184)
HSL	hsl(207, 54%, 47%)
HSV	hsv(207, 70%, 72%)
CMYK	cmyk(70.1%, 31%, 0%, 27.8%)
CIE-LAB	lab(51.21, -3.56, -36.50)
CIE-LCH	lch(51.21, 36.67, 264.43°)
OKLab	oklab(57.72% -0.0469 -0.1033)
OKLCH	oklch(57.72% 0.113 245.6)
XYZ	xyz(17.8134, 19.4497, 48.1535)
Luminance	0.1945 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377FB8 #B87037

analogous

#37B8B1 #377FB8 #373EB8

triadic

#377FB8 #B8377F #7FB837

tetradic

#377FB8 #B137B8 #B87037 #3EB837

square

#377FB8 #B137B8 #B87037 #3EB837

split-complementary

#377FB8 #B8373E #B8B137

monochromatic

#1B3E5A #295E89 #377FB8 #5D9DCF #8DB9DD

Accessibility & contrast

On white

4.29

#377FB8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.89

#377FB8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377FB8

4.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377FB8	#FFFFFF	#000000	##000000
##377FB8	1.00	4.29	4.89	4.89
#FFFFFF	4.29	1.00	21.00	21.00
#000000	4.89	21.00	1.00	1.00
##000000	4.89	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6581BA

Deuteranopia (green-blind)

#5374B7

Tritanopia (blue-blind)

#008D93

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #377fb8;
/* rgb */ color: rgb(55, 127, 184);
/* oklch */ color: oklch(57.7% 0.113 245.6);

Tailwind

colors: {
  custom: {
    50: '#7da3cd',
    500: '#377fb8',
    950: '#000000',
  },
}

SCSS

$custom: #377fb8;
$custom-light: #7da3cd;
$custom-dark: #000000;

JSON

{
  "hex": "#377fb8",
  "rgb": {
    "r": 55,
    "g": 127,
    "b": 184
  },
  "hsl": {
    "h": 206.512,
    "s": 53.975,
    "l": 46.863
  },
  "oklch": {
    "l": 0.57717,
    "c": 0.11343,
    "h": 245.6
  },
  "luminance": 0.19452
}

Semantic roles & 50–950 ramp

primary

#377FB8

secondary

#C7A184

accent

#8B4ADD

background

#F8FAFC

surface

#EFF3F9

border

#CACDD2

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #377FB8

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

Preview Lab → · Contrast checker → · Palette generator →