#377DDF#377DDF

#377DDF is a mid, vivid blue. Relative luminance 0.208; OKLCH L 59.6% C 0.165 H 257.6°. Best body text is #000000 at 5.16:1 contrast (WCAG AA passes).

Color values

HEX	#377DDF
RGB	rgb(55, 125, 223)
HSL	hsl(215, 72%, 55%)
HSV	hsv(215, 75%, 87%)
CMYK	cmyk(75.3%, 43.9%, 0%, 12.5%)
CIE-LAB	lab(52.73, 11.76, -56.25)
CIE-LCH	lch(52.73, 57.47, 281.81°)
OKLab	oklab(59.59% -0.0356 -0.1612)
OKLCH	oklch(59.59% 0.165 257.6)
XYZ	xyz(22.2236, 20.8046, 72.6422)
Luminance	0.2081 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377DDF #DF9937

analogous

#37D1DF #377DDF #4537DF

triadic

#377DDF #DF377D #7DDF37

tetradic

#377DDF #DF37D1 #DF9937 #37DF45

square

#377DDF #DF37D1 #DF9937 #37DF45

split-complementary

#377DDF #DF4537 #D1DF37

monochromatic

#154486 #1E5FBB #377DDF #6C9FE7 #A1C2F0

Accessibility & contrast

On white

4.07

#377DDF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.16

#377DDF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377DDF

5.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377DDF	#FFFFFF	#000000	##000000
##377DDF	1.00	4.07	5.16	5.16
#FFFFFF	4.07	1.00	21.00	21.00
#000000	5.16	21.00	1.00	1.00
##000000	5.16	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B86E3

Deuteranopia (green-blind)

#2977DD

Tritanopia (blue-blind)

#0094A3

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #377ddf;
/* rgb */ color: rgb(55, 125, 223);
/* oklch */ color: oklch(59.6% 0.165 257.6);

Tailwind

colors: {
  custom: {
    50: '#84a2e9',
    500: '#377ddf',
    950: '#000000',
  },
}

SCSS

$custom: #377ddf;
$custom-light: #84a2e9;
$custom-dark: #000000;

JSON

{
  "hex": "#377ddf",
  "rgb": {
    "r": 55,
    "g": 125,
    "b": 223
  },
  "hsl": {
    "h": 215,
    "s": 72.414,
    "l": 54.51
  },
  "oklch": {
    "l": 0.59592,
    "c": 0.16504,
    "h": 257.6
  },
  "luminance": 0.20807
}

Semantic roles & 50–950 ramp

primary

#377DDF

secondary

#DCBF95

accent

#A339EF

background

#F8F9FE

surface

#F0F2FD

border

#CBCCD5

text

#0C0E16

muted

#7D7E84

Preview Lab

Preview with #377DDF

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

Preview Lab → · Contrast checker → · Palette generator →