#377ED0#377ED0

#377ED0 is a mid, vivid cyan. Relative luminance 0.203; OKLCH L 58.9% C 0.144 H 254.1°. Best body text is #000000 at 5.06:1 contrast (WCAG AA passes).

Color values

HEX	#377ED0
RGB	rgb(55, 126, 208)
HSL	hsl(212, 62%, 52%)
HSV	hsv(212, 74%, 82%)
CMYK	cmyk(73.6%, 39.4%, 0%, 18.4%)
CIE-LAB	lab(52.16, 5.66, -48.70)
CIE-LCH	lch(52.16, 49.03, 276.63°)
OKLab	oklab(58.87% -0.0396 -0.139)
OKLCH	oklch(58.87% 0.144 254.1)
XYZ	xyz(20.4173, 20.2857, 62.5018)
Luminance	0.2029 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377ED0 #D08937

analogous

#37CAD0 #377ED0 #3D37D0

triadic

#377ED0 #D0377E #7ED037

tetradic

#377ED0 #D037CA #D08937 #37D03D

square

#377ED0 #D037CA #D08937 #37D03D

split-complementary

#377ED0 #D03D37 #CAD037

monochromatic

#1B4372 #2660A3 #377ED0 #699EDC #9ABEE7

Accessibility & contrast

On white

4.15

#377ED0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.06

#377ED0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377ED0

5.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377ED0	#FFFFFF	#000000	##000000
##377ED0	1.00	4.15	5.06	5.06
#FFFFFF	4.15	1.00	21.00	21.00
#000000	5.06	21.00	1.00	1.00
##000000	5.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5784D3

Deuteranopia (green-blind)

#3F76CE

Tritanopia (blue-blind)

#00919D

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #377ed0;
/* rgb */ color: rgb(55, 126, 208);
/* oklch */ color: oklch(58.9% 0.144 254.1);

Tailwind

colors: {
  custom: {
    50: '#81a2df',
    500: '#377ed0',
    950: '#000000',
  },
}

SCSS

$custom: #377ed0;
$custom-light: #81a2df;
$custom-dark: #000000;

JSON

{
  "hex": "#377ed0",
  "rgb": {
    "r": 55,
    "g": 126,
    "b": 208
  },
  "hsl": {
    "h": 212.157,
    "s": 61.943,
    "l": 51.569
  },
  "oklch": {
    "l": 0.58866,
    "c": 0.14448,
    "h": 254.1
  },
  "luminance": 0.20288
}

Semantic roles & 50–950 ramp

primary

#377ED0

secondary

#D3B490

accent

#9A43E5

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0F15

muted

#7D7E83

Preview Lab

Preview with #377ED0

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

Preview Lab → · Contrast checker → · Palette generator →