#377DCC#377DCC

#377DCC is a mid, vivid cyan. Relative luminance 0.198; OKLCH L 58.4% C 0.140 H 253.6°. Best body text is #000000 at 4.97:1 contrast (WCAG AA passes).

Color values

HEX	#377DCC
RGB	rgb(55, 125, 204)
HSL	hsl(212, 59%, 51%)
HSV	hsv(212, 73%, 80%)
CMYK	cmyk(73%, 38.7%, 0%, 20%)
CIE-LAB	lab(51.65, 4.82, -47.24)
CIE-LCH	lch(51.65, 47.48, 275.82°)
OKLab	oklab(58.4% -0.0396 -0.1347)
OKLCH	oklch(58.4% 0.14 253.6)
XYZ	xyz(19.8042, 19.8369, 59.9002)
Luminance	0.1984 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377DCC #CC8637

analogous

#37C8CC #377DCC #3B37CC

triadic

#377DCC #CC377D #7DCC37

tetradic

#377DCC #CC37C8 #CC8637 #37CC3B

square

#377DCC #CC37C8 #CC8637 #37CC3B

split-complementary

#377DCC #CC3B37 #C8CC37

monochromatic

#1C426D #285F9E #377DCC #689DD8 #99BCE5

Accessibility & contrast

On white

4.23

#377DCC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.97

#377DCC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377DCC

4.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377DCC	#FFFFFF	#000000	##000000
##377DCC	1.00	4.23	4.97	4.97
#FFFFFF	4.23	1.00	21.00	21.00
#000000	4.97	21.00	1.00	1.00
##000000	4.97	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5883CF

Deuteranopia (green-blind)

#4175CA

Tritanopia (blue-blind)

#00909B

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #377dcc;
/* rgb */ color: rgb(55, 125, 204);
/* oklch */ color: oklch(58.4% 0.140 253.6);

Tailwind

colors: {
  custom: {
    50: '#81a2dc',
    500: '#377dcc',
    950: '#000000',
  },
}

SCSS

$custom: #377dcc;
$custom-light: #81a2dc;
$custom-dark: #000000;

JSON

{
  "hex": "#377dcc",
  "rgb": {
    "r": 55,
    "g": 125,
    "b": 204
  },
  "hsl": {
    "h": 211.812,
    "s": 59.363,
    "l": 50.784
  },
  "oklch": {
    "l": 0.584,
    "c": 0.14038,
    "h": 253.6
  },
  "luminance": 0.19839
}

Semantic roles & 50–950 ramp

primary

#377DCC

secondary

#D0B18E

accent

#9945E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0F15

muted

#7D7E83

Preview Lab

Preview with #377DCC

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

Preview Lab → · Contrast checker → · Palette generator →