#377CC3#377CC3

#377CC3 is a mid, vivid cyan. Relative luminance 0.192; OKLCH L 57.6% C 0.130 H 251.6°. Best body text is #000000 at 4.83:1 contrast (WCAG AA passes).

Color values

HEX	#377CC3
RGB	rgb(55, 124, 195)
HSL	hsl(210, 56%, 49%)
HSV	hsv(210, 72%, 76%)
CMYK	cmyk(71.8%, 36.4%, 0%, 23.5%)
CIE-LAB	lab(50.88, 2.16, -43.33)
CIE-LCH	lch(50.88, 43.38, 272.86°)
OKLab	oklab(57.64% -0.0409 -0.1232)
OKLCH	oklch(57.64% 0.13 251.6)
XYZ	xyz(18.6298, 19.1656, 54.3367)
Luminance	0.1917 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377CC3 #C37E37

analogous

#37C2C3 #377CC3 #3837C3

triadic

#377CC3 #C3377C #7CC337

tetradic

#377CC3 #C337C2 #C37E37 #37C338

square

#377CC3 #C337C2 #C37E37 #37C338

split-complementary

#377CC3 #C33837 #C2C337

monochromatic

#1C3F64 #2A5E93 #377CC3 #649BD3 #94BAE1

Accessibility & contrast

On white

4.34

#377CC3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.83

#377CC3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377CC3

4.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377CC3	#FFFFFF	#000000	##000000
##377CC3	1.00	4.34	4.83	4.83
#FFFFFF	4.34	1.00	21.00	21.00
#000000	4.83	21.00	1.00	1.00
##000000	4.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C80C6

Deuteranopia (green-blind)

#4773C2

Tritanopia (blue-blind)

#008D96

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #377cc3;
/* rgb */ color: rgb(55, 124, 195);
/* oklch */ color: oklch(57.6% 0.130 251.6);

Tailwind

colors: {
  custom: {
    50: '#7fa1d5',
    500: '#377cc3',
    950: '#000000',
  },
}

SCSS

$custom: #377cc3;
$custom-light: #7fa1d5;
$custom-dark: #000000;

JSON

{
  "hex": "#377cc3",
  "rgb": {
    "r": 55,
    "g": 124,
    "b": 195
  },
  "hsl": {
    "h": 210.429,
    "s": 56,
    "l": 49.02
  },
  "oklch": {
    "l": 0.5764,
    "c": 0.12985,
    "h": 251.6
  },
  "luminance": 0.19168
}

Semantic roles & 50–950 ramp

primary

#377CC3

secondary

#CCAB8A

accent

#9549DF

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #377CC3

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

Preview Lab → · Contrast checker → · Palette generator →