#377CDF#377CDF

#377CDF is a mid, vivid blue. Relative luminance 0.206; OKLCH L 59.4% C 0.166 H 257.9°. Best body text is #000000 at 5.11:1 contrast (WCAG AA passes).

Color values

HEX	#377CDF
RGB	rgb(55, 124, 223)
HSL	hsl(215, 72%, 55%)
HSV	hsv(215, 75%, 87%)
CMYK	cmyk(75.3%, 44.4%, 0%, 12.5%)
CIE-LAB	lab(52.46, 12.38, -56.70)
CIE-LCH	lch(52.46, 58.03, 282.32°)
OKLab	oklab(59.38% -0.0348 -0.1625)
OKLCH	oklch(59.38% 0.166 257.9)
XYZ	xyz(22.0976, 20.5527, 72.6002)
Luminance	0.2056 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377CDF #DF9A37

analogous

#37D0DF #377CDF #4637DF

triadic

#377CDF #DF377C #7CDF37

tetradic

#377CDF #DF37D0 #DF9A37 #37DF46

square

#377CDF #DF37D0 #DF9A37 #37DF46

split-complementary

#377CDF #DF4637 #D0DF37

monochromatic

#154486 #1E5EBB #377CDF #6C9FE7 #A1C1F0

Accessibility & contrast

On white

4.11

#377CDF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.11

#377CDF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377CDF

5.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377CDF	#FFFFFF	#000000	##000000
##377CDF	1.00	4.11	5.11	5.11
#FFFFFF	4.11	1.00	21.00	21.00
#000000	5.11	21.00	1.00	1.00
##000000	5.11	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4985E3

Deuteranopia (green-blind)

#2676DD

Tritanopia (blue-blind)

#0093A3

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #377cdf;
/* rgb */ color: rgb(55, 124, 223);
/* oklch */ color: oklch(59.4% 0.166 257.9);

Tailwind

colors: {
  custom: {
    50: '#84a1e9',
    500: '#377cdf',
    950: '#000000',
  },
}

SCSS

$custom: #377cdf;
$custom-light: #84a1e9;
$custom-dark: #000000;

JSON

{
  "hex": "#377cdf",
  "rgb": {
    "r": 55,
    "g": 124,
    "b": 223
  },
  "hsl": {
    "h": 215.357,
    "s": 72.414,
    "l": 54.51
  },
  "oklch": {
    "l": 0.59377,
    "c": 0.16616,
    "h": 257.9
  },
  "luminance": 0.20555
}

Semantic roles & 50–950 ramp

primary

#377CDF

secondary

#DCBF95

accent

#A439EF

background

#F8F9FE

surface

#F0F2FD

border

#CBCCD5

text

#0C0E16

muted

#7D7E84

Preview Lab

Preview with #377CDF

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

Preview Lab → · Contrast checker → · Palette generator →