#377EDA#377EDA

#377EDA is a mid, vivid cyan. Relative luminance 0.208; OKLCH L 59.5% C 0.157 H 256.3°. Best body text is #000000 at 5.16:1 contrast (WCAG AA passes).

Color values

HEX	#377EDA
RGB	rgb(55, 126, 218)
HSL	hsl(214, 69%, 54%)
HSV	hsv(214, 75%, 85%)
CMYK	cmyk(74.8%, 42.2%, 0%, 14.5%)
CIE-LAB	lab(52.72, 9.31, -53.46)
CIE-LCH	lch(52.72, 54.26, 279.88°)
OKLab	oklab(59.49% -0.0374 -0.1529)
OKLCH	oklch(59.49% 0.157 256.3)
XYZ	xyz(21.6866, 20.7934, 69.1866)
Luminance	0.2080 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377EDA #DA9337

analogous

#37CFDA #377EDA #4137DA

triadic

#377EDA #DA377E #7EDA37

tetradic

#377EDA #DA37CF #DA9337 #37DA41

square

#377EDA #DA37CF #DA9337 #37DA41

split-complementary

#377EDA #DA4137 #CFDA37

monochromatic

#18457F #2161B3 #377EDA #6B9FE4 #9EC1ED

Accessibility & contrast

On white

4.07

#377EDA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.16

#377EDA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377EDA

5.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377EDA	#FFFFFF	#000000	##000000
##377EDA	1.00	4.07	5.16	5.16
#FFFFFF	4.07	1.00	21.00	21.00
#000000	5.16	21.00	1.00	1.00
##000000	5.16	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5186DE

Deuteranopia (green-blind)

#3477D8

Tritanopia (blue-blind)

#0094A1

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #377eda;
/* rgb */ color: rgb(55, 126, 218);
/* oklch */ color: oklch(59.5% 0.157 256.3);

Tailwind

colors: {
  custom: {
    50: '#83a2e6',
    500: '#377eda',
    950: '#000000',
  },
}

SCSS

$custom: #377eda;
$custom-light: #83a2e6;
$custom-dark: #000000;

JSON

{
  "hex": "#377eda",
  "rgb": {
    "r": 55,
    "g": 126,
    "b": 218
  },
  "hsl": {
    "h": 213.865,
    "s": 68.776,
    "l": 53.529
  },
  "oklch": {
    "l": 0.59488,
    "c": 0.15743,
    "h": 256.3
  },
  "luminance": 0.20796
}

Semantic roles & 50–950 ramp

primary

#377EDA

secondary

#D9BB93

accent

#9F3CEC

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0C0F16

muted

#7D7E84

Preview Lab

Preview with #377EDA

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

Preview Lab → · Contrast checker → · Palette generator →