#377CC9#377CC9

#377CC9 is a mid, vivid cyan. Relative luminance 0.194; OKLCH L 58.0% C 0.138 H 253.4°. Best body text is #000000 at 4.89:1 contrast (WCAG AA passes).

Color values

HEX	#377CC9
RGB	rgb(55, 124, 201)
HSL	hsl(212, 57%, 50%)
HSV	hsv(212, 73%, 79%)
CMYK	cmyk(72.6%, 38.3%, 0%, 21.2%)
CIE-LAB	lab(51.20, 4.34, -46.25)
CIE-LCH	lch(51.20, 46.45, 275.36°)
OKLab	oklab(58% -0.0394 -0.1318)
OKLCH	oklch(58% 0.138 253.4)
XYZ	xyz(19.3219, 19.4424, 57.9815)
Luminance	0.1945 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377CC9 #C98437

analogous

#37C5C9 #377CC9 #3B37C9

triadic

#377CC9 #C9377C #7CC937

tetradic

#377CC9 #C937C5 #C98437 #37C93B

square

#377CC9 #C937C5 #C98437 #37C93B

split-complementary

#377CC9 #C93B37 #C5C937

monochromatic

#1C4169 #295E99 #377CC9 #679CD6 #97BBE3

Accessibility & contrast

On white

4.30

#377CC9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.89

#377CC9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377CC9

4.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377CC9	#FFFFFF	#000000	##000000
##377CC9	1.00	4.30	4.89	4.89
#FFFFFF	4.30	1.00	21.00	21.00
#000000	4.89	21.00	1.00	1.00
##000000	4.89	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5881CC

Deuteranopia (green-blind)

#4274C7

Tritanopia (blue-blind)

#008E99

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #377cc9;
/* rgb */ color: rgb(55, 124, 201);
/* oklch */ color: oklch(58.0% 0.138 253.4);

Tailwind

colors: {
  custom: {
    50: '#80a1da',
    500: '#377cc9',
    950: '#000000',
  },
}

SCSS

$custom: #377cc9;
$custom-light: #80a1da;
$custom-dark: #000000;

JSON

{
  "hex": "#377cc9",
  "rgb": {
    "r": 55,
    "g": 124,
    "b": 201
  },
  "hsl": {
    "h": 211.644,
    "s": 57.48,
    "l": 50.196
  },
  "oklch": {
    "l": 0.57995,
    "c": 0.13755,
    "h": 253.4
  },
  "luminance": 0.19445
}

Semantic roles & 50–950 ramp

primary

#377CC9

secondary

#CFB08D

accent

#9847E1

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #377CC9

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

Preview Lab → · Contrast checker → · Palette generator →