#377FD0#377FD0

#377FD0 is a mid, vivid cyan. Relative luminance 0.205; OKLCH L 59.1% C 0.143 H 253.6°. Best body text is #000000 at 5.11:1 contrast (WCAG AA passes).

Color values

HEX	#377FD0
RGB	rgb(55, 127, 208)
HSL	hsl(212, 62%, 52%)
HSV	hsv(212, 74%, 82%)
CMYK	cmyk(73.6%, 38.9%, 0%, 18.4%)
CIE-LAB	lab(52.45, 5.05, -48.25)
CIE-LCH	lch(52.45, 48.51, 275.98°)
OKLab	oklab(59.09% -0.0405 -0.1376)
OKLCH	oklch(59.09% 0.143 253.6)
XYZ	xyz(20.5459, 20.5427, 62.5446)
Luminance	0.2054 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377FD0 #D08837

analogous

#37CBD0 #377FD0 #3C37D0

triadic

#377FD0 #D0377F #7FD037

tetradic

#377FD0 #D037CB #D08837 #37D03C

square

#377FD0 #D037CB #D08837 #37D03C

split-complementary

#377FD0 #D03C37 #CBD037

monochromatic

#1B4472 #2661A3 #377FD0 #699FDC #9ABEE7

Accessibility & contrast

On white

4.11

#377FD0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.11

#377FD0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377FD0

5.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377FD0	#FFFFFF	#000000	##000000
##377FD0	1.00	4.11	5.11	5.11
#FFFFFF	4.11	1.00	21.00	21.00
#000000	5.11	21.00	1.00	1.00
##000000	5.11	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5985D3

Deuteranopia (green-blind)

#4177CE

Tritanopia (blue-blind)

#00929D

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #377fd0;
/* rgb */ color: rgb(55, 127, 208);
/* oklch */ color: oklch(59.1% 0.143 253.6);

Tailwind

colors: {
  custom: {
    50: '#81a3df',
    500: '#377fd0',
    950: '#000000',
  },
}

SCSS

$custom: #377fd0;
$custom-light: #81a3df;
$custom-dark: #000000;

JSON

{
  "hex": "#377fd0",
  "rgb": {
    "r": 55,
    "g": 127,
    "b": 208
  },
  "hsl": {
    "h": 211.765,
    "s": 61.943,
    "l": 51.569
  },
  "oklch": {
    "l": 0.5909,
    "c": 0.14344,
    "h": 253.6
  },
  "luminance": 0.20545
}

Semantic roles & 50–950 ramp

primary

#377FD0

secondary

#D3B390

accent

#9943E5

background

#F8FAFD

surface

#F0F3FB

border

#CBCDD4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #377FD0

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

Preview Lab → · Contrast checker → · Palette generator →