#377EDD#377EDD

#377EDD is a mid, vivid cyan. Relative luminance 0.210; OKLCH L 59.7% C 0.161 H 256.8°. Best body text is #000000 at 5.19:1 contrast (WCAG AA passes).

Color values

HEX	#377EDD
RGB	rgb(55, 126, 221)
HSL	hsl(214, 71%, 54%)
HSV	hsv(214, 75%, 87%)
CMYK	cmyk(75.1%, 43%, 0%, 13.3%)
CIE-LAB	lab(52.90, 10.41, -54.87)
CIE-LCH	lch(52.90, 55.85, 280.74°)
OKLab	oklab(59.68% -0.0368 -0.1571)
OKLCH	oklch(59.68% 0.161 256.8)
XYZ	xyz(22.0827, 20.9519, 71.2729)
Luminance	0.2095 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377EDD #DD9637

analogous

#37D1DD #377EDD #4337DD

triadic

#377EDD #DD377E #7EDD37

tetradic

#377EDD #DD37D1 #DD9637 #37DD43

square

#377EDD #DD37D1 #DD9637 #37DD43

split-complementary

#377EDD #DD4337 #D1DD37

monochromatic

#164583 #1F60B8 #377EDD #6BA0E6 #A0C1EF

Accessibility & contrast

On white

4.05

#377EDD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.19

#377EDD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377EDD

5.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377EDD	#FFFFFF	#000000	##000000
##377EDD	1.00	4.05	5.19	5.19
#FFFFFF	4.05	1.00	21.00	21.00
#000000	5.19	21.00	1.00	1.00
##000000	5.19	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F86E1

Deuteranopia (green-blind)

#2F77DB

Tritanopia (blue-blind)

#0094A3

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #377edd;
/* rgb */ color: rgb(55, 126, 221);
/* oklch */ color: oklch(59.7% 0.161 256.8);

Tailwind

colors: {
  custom: {
    50: '#84a2e8',
    500: '#377edd',
    950: '#000000',
  },
}

SCSS

$custom: #377edd;
$custom-light: #84a2e8;
$custom-dark: #000000;

JSON

{
  "hex": "#377edd",
  "rgb": {
    "r": 55,
    "g": 126,
    "b": 221
  },
  "hsl": {
    "h": 214.337,
    "s": 70.94,
    "l": 54.118
  },
  "oklch": {
    "l": 0.59679,
    "c": 0.16132,
    "h": 256.8
  },
  "luminance": 0.20954
}

Semantic roles & 50–950 ramp

primary

#377EDD

secondary

#DBBD95

accent

#A13AEE

background

#F8F9FE

surface

#F0F2FD

border

#CBCCD5

text

#0C0F16

muted

#7D7E84

Preview Lab

Preview with #377EDD

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

Preview Lab → · Contrast checker → · Palette generator →