#377DD0#377DD0

#377DD0 is a mid, vivid cyan. Relative luminance 0.200; OKLCH L 58.6% C 0.146 H 254.6°. Best body text is #000000 at 5.01:1 contrast (WCAG AA passes).

Color values

HEX	#377DD0
RGB	rgb(55, 125, 208)
HSL	hsl(213, 62%, 52%)
HSV	hsv(213, 74%, 82%)
CMYK	cmyk(73.6%, 39.9%, 0%, 18.4%)
CIE-LAB	lab(51.87, 6.27, -49.16)
CIE-LCH	lch(51.87, 49.56, 277.27°)
OKLab	oklab(58.64% -0.0387 -0.1403)
OKLCH	oklch(58.64% 0.146 254.6)
XYZ	xyz(20.2901, 20.0312, 62.4593)
Luminance	0.2003 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377DD0 #D08A37

analogous

#37CAD0 #377DD0 #3E37D0

triadic

#377DD0 #D0377D #7DD037

tetradic

#377DD0 #D037CA #D08A37 #37D03E

square

#377DD0 #D037CA #D08A37 #37D03E

split-complementary

#377DD0 #D03E37 #CAD037

monochromatic

#1B4372 #2660A3 #377DD0 #699DDC #9ABDE7

Accessibility & contrast

On white

4.19

#377DD0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.01

#377DD0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377DD0

5.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377DD0	#FFFFFF	#000000	##000000
##377DD0	1.00	4.19	5.01	5.01
#FFFFFF	4.19	1.00	21.00	21.00
#000000	5.01	21.00	1.00	1.00
##000000	5.01	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5683D3

Deuteranopia (green-blind)

#3D75CE

Tritanopia (blue-blind)

#00909C

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #377dd0;
/* rgb */ color: rgb(55, 125, 208);
/* oklch */ color: oklch(58.6% 0.146 254.6);

Tailwind

colors: {
  custom: {
    50: '#81a2df',
    500: '#377dd0',
    950: '#000000',
  },
}

SCSS

$custom: #377dd0;
$custom-light: #81a2df;
$custom-dark: #000000;

JSON

{
  "hex": "#377dd0",
  "rgb": {
    "r": 55,
    "g": 125,
    "b": 208
  },
  "hsl": {
    "h": 212.549,
    "s": 61.943,
    "l": 51.569
  },
  "oklch": {
    "l": 0.58643,
    "c": 0.14555,
    "h": 254.6
  },
  "luminance": 0.20034
}

Semantic roles & 50–950 ramp

primary

#377DD0

secondary

#D3B490

accent

#9B43E5

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0F15

muted

#7D7E83

Preview Lab

Preview with #377DD0

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

Preview Lab → · Contrast checker → · Palette generator →