#377ACC#377ACC

#377ACC is a mid, vivid cyan. Relative luminance 0.191; OKLCH L 57.7% C 0.144 H 255.1°. Best body text is #000000 at 4.82:1 contrast (WCAG AA passes).

Color values

HEX	#377ACC
RGB	rgb(55, 122, 204)
HSL	hsl(213, 59%, 51%)
HSV	hsv(213, 73%, 80%)
CMYK	cmyk(73%, 40.2%, 0%, 20%)
CIE-LAB	lab(50.79, 6.65, -48.61)
CIE-LCH	lch(50.79, 49.06, 277.79°)
OKLab	oklab(57.73% -0.0369 -0.1388)
OKLCH	oklch(57.73% 0.144 255.1)
XYZ	xyz(19.4301, 19.0888, 59.7755)
Luminance	0.1909 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377ACC #CC8937

analogous

#37C5CC #377ACC #3E37CC

triadic

#377ACC #CC377A #7ACC37

tetradic

#377ACC #CC37C5 #CC8937 #37CC3E

square

#377ACC #CC37C5 #CC8937 #37CC3E

split-complementary

#377ACC #CC3E37 #C5CC37

monochromatic

#1C406D #285D9E #377ACC #689AD8 #99BBE5

Accessibility & contrast

On white

4.36

#377ACC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.82

#377ACC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377ACC

4.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377ACC	#FFFFFF	#000000	##000000
##377ACC	1.00	4.36	4.82	4.82
#FFFFFF	4.36	1.00	21.00	21.00
#000000	4.82	21.00	1.00	1.00
##000000	4.82	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5380CF

Deuteranopia (green-blind)

#3B73CA

Tritanopia (blue-blind)

#008D99

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #377acc;
/* rgb */ color: rgb(55, 122, 204);
/* oklch */ color: oklch(57.7% 0.144 255.1);

Tailwind

colors: {
  custom: {
    50: '#819fdc',
    500: '#377acc',
    950: '#000000',
  },
}

SCSS

$custom: #377acc;
$custom-light: #819fdc;
$custom-dark: #000000;

JSON

{
  "hex": "#377acc",
  "rgb": {
    "r": 55,
    "g": 122,
    "b": 204
  },
  "hsl": {
    "h": 213.02,
    "s": 59.363,
    "l": 50.784
  },
  "oklch": {
    "l": 0.57729,
    "c": 0.14357,
    "h": 255.1
  },
  "luminance": 0.19091
}

Semantic roles & 50–950 ramp

primary

#377ACC

secondary

#D0B38E

accent

#9C45E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #377ACC

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

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