#377ADD#377ADD

#377ADD is a mid, vivid blue. Relative luminance 0.200; OKLCH L 58.8% C 0.166 H 258.4°. Best body text is #000000 at 4.99:1 contrast (WCAG AA passes).

Color values

HEX	#377ADD
RGB	rgb(55, 122, 221)
HSL	hsl(216, 71%, 54%)
HSV	hsv(216, 75%, 87%)
CMYK	cmyk(75.1%, 44.8%, 0%, 13.3%)
CIE-LAB	lab(51.78, 12.88, -56.66)
CIE-LCH	lch(51.78, 58.10, 282.81°)
OKLab	oklab(58.82% -0.0335 -0.1624)
OKLCH	oklch(58.82% 0.166 258.4)
XYZ	xyz(21.5815, 19.9493, 71.1058)
Luminance	0.1995 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377ADD #DD9A37

analogous

#37CDDD #377ADD #4737DD

triadic

#377ADD #DD377A #7ADD37

tetradic

#377ADD #DD37CD #DD9A37 #37DD47

square

#377ADD #DD37CD #DD9A37 #37DD47

split-complementary

#377ADD #DD4737 #CDDD37

monochromatic

#164283 #1F5DB8 #377ADD #6B9DE6 #A0C0EF

Accessibility & contrast

On white

4.21

#377ADD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.99

#377ADD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377ADD

4.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377ADD	#FFFFFF	#000000	##000000
##377ADD	1.00	4.21	4.99	4.99
#FFFFFF	4.21	1.00	21.00	21.00
#000000	4.99	21.00	1.00	1.00
##000000	4.99	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4784E1

Deuteranopia (green-blind)

#2374DB

Tritanopia (blue-blind)

#0091A1

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #377add;
/* rgb */ color: rgb(55, 122, 221);
/* oklch */ color: oklch(58.8% 0.166 258.4);

Tailwind

colors: {
  custom: {
    50: '#849fe8',
    500: '#377add',
    950: '#000000',
  },
}

SCSS

$custom: #377add;
$custom-light: #849fe8;
$custom-dark: #000000;

JSON

{
  "hex": "#377add",
  "rgb": {
    "r": 55,
    "g": 122,
    "b": 221
  },
  "hsl": {
    "h": 215.783,
    "s": 70.94,
    "l": 54.118
  },
  "oklch": {
    "l": 0.58815,
    "c": 0.16582,
    "h": 258.4
  },
  "luminance": 0.19952
}

Semantic roles & 50–950 ramp

primary

#377ADD

secondary

#DBBF95

accent

#A53AEE

background

#F8F9FE

surface

#F0F2FD

border

#CBCCD5

text

#0C0E16

muted

#7D7E84

Preview Lab

Preview with #377ADD

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

Preview Lab → · Contrast checker → · Palette generator →