#377CD0#377CD0

#377CD0 is a mid, vivid cyan. Relative luminance 0.198; OKLCH L 58.4% C 0.147 H 255.1°. Best body text is #000000 at 4.96:1 contrast (WCAG AA passes).

Color values

HEX	#377CD0
RGB	rgb(55, 124, 208)
HSL	hsl(213, 62%, 52%)
HSV	hsv(213, 74%, 82%)
CMYK	cmyk(73.6%, 40.4%, 0%, 18.4%)
CIE-LAB	lab(51.59, 6.88, -49.61)
CIE-LCH	lch(51.59, 50.09, 277.90°)
OKLab	oklab(58.42% -0.0378 -0.1417)
OKLCH	oklch(58.42% 0.147 255.1)
XYZ	xyz(20.1642, 19.7793, 62.4174)
Luminance	0.1978 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377CD0 #D08B37

analogous

#37C9D0 #377CD0 #3F37D0

triadic

#377CD0 #D0377C #7CD037

tetradic

#377CD0 #D037C9 #D08B37 #37D03F

square

#377CD0 #D037C9 #D08B37 #37D03F

split-complementary

#377CD0 #D03F37 #C9D037

monochromatic

#1B4272 #265FA3 #377CD0 #699CDC #9ABDE7

Accessibility & contrast

On white

4.24

#377CD0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.96

#377CD0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377CD0

4.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377CD0	#FFFFFF	#000000	##000000
##377CD0	1.00	4.24	4.96	4.96
#FFFFFF	4.24	1.00	21.00	21.00
#000000	4.96	21.00	1.00	1.00
##000000	4.96	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5483D3

Deuteranopia (green-blind)

#3B74CE

Tritanopia (blue-blind)

#00909C

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #377cd0;
/* rgb */ color: rgb(55, 124, 208);
/* oklch */ color: oklch(58.4% 0.147 255.1);

Tailwind

colors: {
  custom: {
    50: '#81a1df',
    500: '#377cd0',
    950: '#000000',
  },
}

SCSS

$custom: #377cd0;
$custom-light: #81a1df;
$custom-dark: #000000;

JSON

{
  "hex": "#377cd0",
  "rgb": {
    "r": 55,
    "g": 124,
    "b": 208
  },
  "hsl": {
    "h": 212.941,
    "s": 61.943,
    "l": 51.569
  },
  "oklch": {
    "l": 0.58421,
    "c": 0.14662,
    "h": 255.1
  },
  "luminance": 0.19782
}

Semantic roles & 50–950 ramp

primary

#377CD0

secondary

#D3B590

accent

#9C43E5

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #377CD0

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

Preview Lab → · Contrast checker → · Palette generator →