#377EC3#377EC3

#377EC3 is a mid, vivid cyan. Relative luminance 0.197; OKLCH L 58.1% C 0.128 H 250.4°. Best body text is #000000 at 4.93:1 contrast (WCAG AA passes).

Color values

HEX	#377EC3
RGB	rgb(55, 126, 195)
HSL	hsl(210, 56%, 49%)
HSV	hsv(210, 72%, 76%)
CMYK	cmyk(71.8%, 35.4%, 0%, 23.5%)
CIE-LAB	lab(51.46, 0.96, -42.40)
CIE-LCH	lch(51.46, 42.41, 271.29°)
OKLab	oklab(58.1% -0.0428 -0.1205)
OKLCH	oklch(58.1% 0.128 250.4)
XYZ	xyz(18.8830, 19.6720, 54.4211)
Luminance	0.1967 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377EC3 #C37C37

analogous

#37C3C2 #377EC3 #3738C3

triadic

#377EC3 #C3377E #7EC337

tetradic

#377EC3 #C237C3 #C37C37 #38C337

square

#377EC3 #C237C3 #C37C37 #38C337

split-complementary

#377EC3 #C33738 #C3C237

monochromatic

#1C4064 #2A5F93 #377EC3 #649CD3 #94BBE1

Accessibility & contrast

On white

4.26

#377EC3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.93

#377EC3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377EC3

4.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377EC3	#FFFFFF	#000000	##000000
##377EC3	1.00	4.26	4.93	4.93
#FFFFFF	4.26	1.00	21.00	21.00
#000000	4.93	21.00	1.00	1.00
##000000	4.93	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F82C6

Deuteranopia (green-blind)

#4A75C2

Tritanopia (blue-blind)

#008E97

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #377ec3;
/* rgb */ color: rgb(55, 126, 195);
/* oklch */ color: oklch(58.1% 0.128 250.4);

Tailwind

colors: {
  custom: {
    50: '#7fa3d5',
    500: '#377ec3',
    950: '#000000',
  },
}

SCSS

$custom: #377ec3;
$custom-light: #7fa3d5;
$custom-dark: #000000;

JSON

{
  "hex": "#377ec3",
  "rgb": {
    "r": 55,
    "g": 126,
    "b": 195
  },
  "hsl": {
    "h": 209.571,
    "s": 56,
    "l": 49.02
  },
  "oklch": {
    "l": 0.58097,
    "c": 0.12788,
    "h": 250.4
  },
  "luminance": 0.19674
}

Semantic roles & 50–950 ramp

primary

#377EC3

secondary

#CCAA8A

accent

#9349DF

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0F14

muted

#7C7E83

Preview Lab

Preview with #377EC3

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

Preview Lab → · Contrast checker → · Palette generator →