#377AE0#377AE0

#377AE0 is a mid, vivid blue. Relative luminance 0.201; OKLCH L 59.0% C 0.170 H 258.8°. Best body text is #000000 at 5.02:1 contrast (WCAG AA passes).

Color values

HEX	#377AE0
RGB	rgb(55, 122, 224)
HSL	hsl(216, 73%, 55%)
HSV	hsv(216, 75%, 88%)
CMYK	cmyk(75.4%, 45.5%, 0%, 12.2%)
CIE-LAB	lab(51.96, 13.98, -58.05)
CIE-LCH	lch(51.96, 59.71, 283.54°)
OKLab	oklab(59.01% -0.0329 -0.1665)
OKLCH	oklch(59.01% 0.17 258.8)
XYZ	xyz(21.9847, 20.1106, 73.2296)
Luminance	0.2011 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377AE0 #E09D37

analogous

#37CFE0 #377AE0 #4937E0

triadic

#377AE0 #E0377A #7AE037

tetradic

#377AE0 #E037CF #E09D37 #37E049

square

#377AE0 #E037CF #E09D37 #37E049

split-complementary

#377AE0 #E04937 #CFE037

monochromatic

#154288 #1D5CBD #377AE0 #6C9DE8 #A1C0F0

Accessibility & contrast

On white

4.18

#377AE0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.02

#377AE0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377AE0

5.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377AE0	#FFFFFF	#000000	##000000
##377AE0	1.00	4.18	5.02	5.02
#FFFFFF	4.18	1.00	21.00	21.00
#000000	5.02	21.00	1.00	1.00
##000000	5.02	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4484E4

Deuteranopia (green-blind)

#1C75DE

Tritanopia (blue-blind)

#0092A2

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #377ae0;
/* rgb */ color: rgb(55, 122, 224);
/* oklch */ color: oklch(59.0% 0.170 258.8);

Tailwind

colors: {
  custom: {
    50: '#859fea',
    500: '#377ae0',
    950: '#000000',
  },
}

SCSS

$custom: #377ae0;
$custom-light: #859fea;
$custom-dark: #000000;

JSON

{
  "hex": "#377ae0",
  "rgb": {
    "r": 55,
    "g": 122,
    "b": 224
  },
  "hsl": {
    "h": 216.213,
    "s": 73.16,
    "l": 54.706
  },
  "oklch": {
    "l": 0.59014,
    "c": 0.16974,
    "h": 258.8
  },
  "luminance": 0.20113
}

Semantic roles & 50–950 ramp

primary

#377AE0

secondary

#DDC196

accent

#A738F0

background

#F8F9FE

surface

#F0F2FD

border

#CBCCD5

text

#0D0E16

muted

#7D7E84

Preview Lab

Preview with #377AE0

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

Preview Lab → · Contrast checker → · Palette generator →