#377EB8#377EB8

#377EB8 is a mid, moderate cyan. Relative luminance 0.192; OKLCH L 57.5% C 0.114 H 246.3°. Best body text is #000000 at 4.84:1 contrast (WCAG AA passes).

Color values

HEX	#377EB8
RGB	rgb(55, 126, 184)
HSL	hsl(207, 54%, 47%)
HSV	hsv(207, 70%, 72%)
CMYK	cmyk(70.1%, 31.5%, 0%, 27.8%)
CIE-LAB	lab(50.91, -2.97, -36.97)
CIE-LCH	lch(50.91, 37.09, 265.41°)
OKLab	oklab(57.48% -0.0459 -0.1046)
OKLCH	oklch(57.48% 0.114 246.3)
XYZ	xyz(17.6849, 19.1927, 48.1106)
Luminance	0.1920 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377EB8 #B87137

analogous

#37B8B2 #377EB8 #373DB8

triadic

#377EB8 #B8377E #7EB837

tetradic

#377EB8 #B237B8 #B87137 #3DB837

square

#377EB8 #B237B8 #B87137 #3DB837

split-complementary

#377EB8 #B8373D #B8B237

monochromatic

#1B3D5A #295E89 #377EB8 #5D9CCF #8DB9DD

Accessibility & contrast

On white

4.34

#377EB8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.84

#377EB8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377EB8

4.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377EB8	#FFFFFF	#000000	##000000
##377EB8	1.00	4.34	4.84	4.84
#FFFFFF	4.34	1.00	21.00	21.00
#000000	4.84	21.00	1.00	1.00
##000000	4.84	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6480BB

Deuteranopia (green-blind)

#5274B7

Tritanopia (blue-blind)

#008C93

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #377eb8;
/* rgb */ color: rgb(55, 126, 184);
/* oklch */ color: oklch(57.5% 0.114 246.3);

Tailwind

colors: {
  custom: {
    50: '#7da3cd',
    500: '#377eb8',
    950: '#000000',
  },
}

SCSS

$custom: #377eb8;
$custom-light: #7da3cd;
$custom-dark: #000000;

JSON

{
  "hex": "#377eb8",
  "rgb": {
    "r": 55,
    "g": 126,
    "b": 184
  },
  "hsl": {
    "h": 206.977,
    "s": 53.975,
    "l": 46.863
  },
  "oklch": {
    "l": 0.57482,
    "c": 0.11427,
    "h": 246.3
  },
  "luminance": 0.19195
}

Semantic roles & 50–950 ramp

primary

#377EB8

secondary

#C7A284

accent

#8C4ADD

background

#F8FAFC

surface

#EFF3F9

border

#CACDD2

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #377EB8

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

Preview Lab → · Contrast checker → · Palette generator →