#377FD4#377FD4

#377FD4 is a mid, vivid cyan. Relative luminance 0.207; OKLCH L 59.3% C 0.149 H 254.6°. Best body text is #000000 at 5.15:1 contrast (WCAG AA passes).

Color values

HEX	#377FD4
RGB	rgb(55, 127, 212)
HSL	hsl(212, 65%, 52%)
HSV	hsv(212, 74%, 83%)
CMYK	cmyk(74.1%, 40.1%, 0%, 16.9%)
CIE-LAB	lab(52.67, 6.51, -50.16)
CIE-LCH	lch(52.67, 50.58, 277.39°)
OKLab	oklab(59.33% -0.0395 -0.1432)
OKLCH	oklch(59.33% 0.149 254.6)
XYZ	xyz(21.0442, 20.7421, 65.1691)
Luminance	0.2074 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377FD4 #D48C37

analogous

#37CED4 #377FD4 #3E37D4

triadic

#377FD4 #D4377F #7FD437

tetradic

#377FD4 #D437CE #D48C37 #37D43E

square

#377FD4 #D437CE #D48C37 #37D43E

split-complementary

#377FD4 #D43E37 #CED437

monochromatic

#1A4477 #2461A9 #377FD4 #699FDF #9CBFEA

Accessibility & contrast

On white

4.08

#377FD4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.15

#377FD4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377FD4

5.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377FD4	#FFFFFF	#000000	##000000
##377FD4	1.00	4.08	5.15	5.15
#FFFFFF	4.08	1.00	21.00	21.00
#000000	5.15	21.00	1.00	1.00
##000000	5.15	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5786D7

Deuteranopia (green-blind)

#3D77D2

Tritanopia (blue-blind)

#00939F

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #377fd4;
/* rgb */ color: rgb(55, 127, 212);
/* oklch */ color: oklch(59.3% 0.149 254.6);

Tailwind

colors: {
  custom: {
    50: '#82a3e2',
    500: '#377fd4',
    950: '#000000',
  },
}

SCSS

$custom: #377fd4;
$custom-light: #82a3e2;
$custom-dark: #000000;

JSON

{
  "hex": "#377fd4",
  "rgb": {
    "r": 55,
    "g": 127,
    "b": 212
  },
  "hsl": {
    "h": 212.484,
    "s": 64.609,
    "l": 52.353
  },
  "oklch": {
    "l": 0.59334,
    "c": 0.14858,
    "h": 254.6
  },
  "luminance": 0.20744
}

Semantic roles & 50–950 ramp

primary

#377FD4

secondary

#D6B691

accent

#9B40E8

background

#F8FAFD

surface

#F0F3FB

border

#CBCDD4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #377FD4

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

Preview Lab → · Contrast checker → · Palette generator →