#377BDA#377BDA

#377BDA is a mid, vivid cyan. Relative luminance 0.200; OKLCH L 58.8% C 0.161 H 257.5°. Best body text is #000000 at 5.01:1 contrast (WCAG AA passes).

Color values

HEX	#377BDA
RGB	rgb(55, 123, 218)
HSL	hsl(215, 69%, 54%)
HSV	hsv(215, 75%, 85%)
CMYK	cmyk(74.8%, 43.6%, 0%, 14.5%)
CIE-LAB	lab(51.88, 11.16, -54.80)
CIE-LCH	lch(51.88, 55.93, 281.51°)
OKLab	oklab(58.84% -0.0348 -0.1569)
OKLCH	oklch(58.84% 0.161 257.5)
XYZ	xyz(21.3088, 20.0377, 69.0607)
Luminance	0.2004 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377BDA #DA9637

analogous

#37CDDA #377BDA #4437DA

triadic

#377BDA #DA377B #7BDA37

tetradic

#377BDA #DA37CD #DA9637 #37DA44

square

#377BDA #DA37CD #DA9637 #37DA44

split-complementary

#377BDA #DA4437 #CDDA37

monochromatic

#18437F #215EB3 #377BDA #6B9DE4 #9EBFED

Accessibility & contrast

On white

4.19

#377BDA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.01

#377BDA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377BDA

5.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377BDA	#FFFFFF	#000000	##000000
##377BDA	1.00	4.19	5.01	5.01
#FFFFFF	4.19	1.00	21.00	21.00
#000000	5.01	21.00	1.00	1.00
##000000	5.01	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B84DE

Deuteranopia (green-blind)

#2C75D8

Tritanopia (blue-blind)

#0091A0

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #377bda;
/* rgb */ color: rgb(55, 123, 218);
/* oklch */ color: oklch(58.8% 0.161 257.5);

Tailwind

colors: {
  custom: {
    50: '#83a0e6',
    500: '#377bda',
    950: '#000000',
  },
}

SCSS

$custom: #377bda;
$custom-light: #83a0e6;
$custom-dark: #000000;

JSON

{
  "hex": "#377bda",
  "rgb": {
    "r": 55,
    "g": 123,
    "b": 218
  },
  "hsl": {
    "h": 214.969,
    "s": 68.776,
    "l": 53.529
  },
  "oklch": {
    "l": 0.58835,
    "c": 0.16076,
    "h": 257.5
  },
  "luminance": 0.2004
}

Semantic roles & 50–950 ramp

primary

#377BDA

secondary

#D9BC93

accent

#A23CEC

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0C0E16

muted

#7D7E84

Preview Lab

Preview with #377BDA

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

Preview Lab → · Contrast checker → · Palette generator →