#377CDE#377CDE

#377CDE is a mid, vivid blue. Relative luminance 0.205; OKLCH L 59.3% C 0.165 H 257.8°. Best body text is #000000 at 5.10:1 contrast (WCAG AA passes).

Color values

HEX	#377CDE
RGB	rgb(55, 124, 222)
HSL	hsl(215, 72%, 54%)
HSV	hsv(215, 75%, 87%)
CMYK	cmyk(75.2%, 44.1%, 0%, 12.9%)
CIE-LAB	lab(52.40, 12.01, -56.23)
CIE-LCH	lch(52.40, 57.50, 282.06°)
OKLab	oklab(59.31% -0.0349 -0.1611)
OKLCH	oklch(59.31% 0.165 257.8)
XYZ	xyz(21.9632, 20.4989, 71.8922)
Luminance	0.2050 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377CDE #DE9937

analogous

#37CFDE #377CDE #4637DE

triadic

#377CDE #DE377C #7CDE37

tetradic

#377CDE #DE37CF #DE9937 #37DE46

square

#377CDE #DE37CF #DE9937 #37DE46

split-complementary

#377CDE #DE4637 #CFDE37

monochromatic

#164485 #1F5EB9 #377CDE #6C9EE7 #A0C1EF

Accessibility & contrast

On white

4.12

#377CDE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.10

#377CDE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377CDE

5.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377CDE	#FFFFFF	#000000	##000000
##377CDE	1.00	4.12	5.10	5.10
#FFFFFF	4.12	1.00	21.00	21.00
#000000	5.10	21.00	1.00	1.00
##000000	5.10	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A85E2

Deuteranopia (green-blind)

#2876DC

Tritanopia (blue-blind)

#0093A2

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #377cde;
/* rgb */ color: rgb(55, 124, 222);
/* oklch */ color: oklch(59.3% 0.165 257.8);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#377cde",
  "rgb": {
    "r": 55,
    "g": 124,
    "b": 222
  },
  "hsl": {
    "h": 215.21,
    "s": 71.674,
    "l": 54.314
  },
  "oklch": {
    "l": 0.59311,
    "c": 0.16486,
    "h": 257.8
  },
  "luminance": 0.20501
}

Semantic roles & 50–950 ramp

primary

#377CDE

secondary

#DCBF95

accent

#A439EE

background

#F8F9FE

surface

#F0F2FD

border

#CBCCD5

text

#0C0E16

muted

#7D7E84

Preview Lab

Preview with #377CDE

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

Preview Lab → · Contrast checker → · Palette generator →