#377ED9#377ED9

#377ED9 is a mid, vivid cyan. Relative luminance 0.207; OKLCH L 59.4% C 0.156 H 256.1°. Best body text is #000000 at 5.15:1 contrast (WCAG AA passes).

Color values

HEX	#377ED9
RGB	rgb(55, 126, 217)
HSL	hsl(214, 68%, 53%)
HSV	hsv(214, 75%, 85%)
CMYK	cmyk(74.7%, 41.9%, 0%, 14.9%)
CIE-LAB	lab(52.67, 8.95, -52.98)
CIE-LCH	lch(52.67, 53.73, 279.58°)
OKLab	oklab(59.43% -0.0376 -0.1515)
OKLCH	oklch(59.43% 0.156 256.1)
XYZ	xyz(21.5562, 20.7412, 68.4996)
Luminance	0.2074 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377ED9 #D99237

analogous

#37CFD9 #377ED9 #4137D9

triadic

#377ED9 #D9377E #7ED937

tetradic

#377ED9 #D937CF #D99237 #37D941

square

#377ED9 #D937CF #D99237 #37D941

split-complementary

#377ED9 #D94137 #CFD937

monochromatic

#18457E #2261B1 #377ED9 #6A9FE3 #9EC0ED

Accessibility & contrast

On white

4.08

#377ED9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.15

#377ED9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377ED9

5.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377ED9	#FFFFFF	#000000	##000000
##377ED9	1.00	4.08	5.15	5.15
#FFFFFF	4.08	1.00	21.00	21.00
#000000	5.15	21.00	1.00	1.00
##000000	5.15	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5186DD

Deuteranopia (green-blind)

#3577D7

Tritanopia (blue-blind)

#0093A1

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #377ed9;
/* rgb */ color: rgb(55, 126, 217);
/* oklch */ color: oklch(59.4% 0.156 256.1);

Tailwind

colors: {
  custom: {
    50: '#83a2e5',
    500: '#377ed9',
    950: '#000000',
  },
}

SCSS

$custom: #377ed9;
$custom-light: #83a2e5;
$custom-dark: #000000;

JSON

{
  "hex": "#377ed9",
  "rgb": {
    "r": 55,
    "g": 126,
    "b": 217
  },
  "hsl": {
    "h": 213.704,
    "s": 68.067,
    "l": 53.333
  },
  "oklch": {
    "l": 0.59425,
    "c": 0.15613,
    "h": 256.1
  },
  "luminance": 0.20744
}

Semantic roles & 50–950 ramp

primary

#377ED9

secondary

#D9BA93

accent

#9F3DEB

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0C0F16

muted

#7D7E84

Preview Lab

Preview with #377ED9

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

Preview Lab → · Contrast checker → · Palette generator →