#377ED8#377ED8

#377ED8 is a mid, vivid cyan. Relative luminance 0.207; OKLCH L 59.4% C 0.155 H 255.9°. Best body text is #000000 at 5.14:1 contrast (WCAG AA passes).

Color values

HEX	#377ED8
RGB	rgb(55, 126, 216)
HSL	hsl(214, 67%, 53%)
HSV	hsv(214, 75%, 85%)
CMYK	cmyk(74.5%, 41.7%, 0%, 15.3%)
CIE-LAB	lab(52.61, 8.58, -52.51)
CIE-LCH	lch(52.61, 53.21, 279.28°)
OKLab	oklab(59.36% -0.0378 -0.1501)
OKLCH	oklch(59.36% 0.155 255.9)
XYZ	xyz(21.4265, 20.6894, 67.8166)
Luminance	0.2069 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377ED8 #D89137

analogous

#37CFD8 #377ED8 #4037D8

triadic

#377ED8 #D8377E #7ED837

tetradic

#377ED8 #D837CF #D89137 #37D840

square

#377ED8 #D837CF #D89137 #37D840

split-complementary

#377ED8 #D84037 #CFD837

monochromatic

#18447C #2261B0 #377ED8 #6A9FE2 #9DC0EC

Accessibility & contrast

On white

4.09

#377ED8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.14

#377ED8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377ED8

5.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377ED8	#FFFFFF	#000000	##000000
##377ED8	1.00	4.09	5.14	5.14
#FFFFFF	4.09	1.00	21.00	21.00
#000000	5.14	21.00	1.00	1.00
##000000	5.14	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5286DC

Deuteranopia (green-blind)

#3677D6

Tritanopia (blue-blind)

#0093A0

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #377ed8;
/* rgb */ color: rgb(55, 126, 216);
/* oklch */ color: oklch(59.4% 0.155 255.9);

Tailwind

colors: {
  custom: {
    50: '#83a2e4',
    500: '#377ed8',
    950: '#000000',
  },
}

SCSS

$custom: #377ed8;
$custom-light: #83a2e4;
$custom-dark: #000000;

JSON

{
  "hex": "#377ed8",
  "rgb": {
    "r": 55,
    "g": 126,
    "b": 216
  },
  "hsl": {
    "h": 213.54,
    "s": 67.364,
    "l": 53.137
  },
  "oklch": {
    "l": 0.59361,
    "c": 0.15484,
    "h": 255.9
  },
  "luminance": 0.20692
}

Semantic roles & 50–950 ramp

primary

#377ED8

secondary

#D8B993

accent

#9E3EEA

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0C0F16

muted

#7D7E84

Preview Lab

Preview with #377ED8

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

Preview Lab → · Contrast checker → · Palette generator →