#377EB6#377EB6

#377EB6 is a mid, moderate cyan. Relative luminance 0.191; OKLCH L 57.4% C 0.112 H 245.4°. Best body text is #000000 at 4.82:1 contrast (WCAG AA passes).

Color values

HEX	#377EB6
RGB	rgb(55, 126, 182)
HSL	hsl(206, 54%, 46%)
HSV	hsv(206, 70%, 71%)
CMYK	cmyk(69.8%, 30.8%, 0%, 28.6%)
CIE-LAB	lab(50.81, -3.67, -35.97)
CIE-LCH	lch(50.81, 36.15, 264.17°)
OKLab	oklab(57.37% -0.0465 -0.1017)
OKLCH	oklch(57.37% 0.112 245.4)
XYZ	xyz(17.4767, 19.1094, 47.0143)
Luminance	0.1911 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377EB6 #B66F37

analogous

#37B6AF #377EB6 #373FB6

triadic

#377EB6 #B6377E #7EB637

tetradic

#377EB6 #AF37B6 #B66F37 #3FB637

square

#377EB6 #AF37B6 #B66F37 #3FB637

split-complementary

#377EB6 #B6373F #B6AF37

monochromatic

#1B3D58 #295D87 #377EB6 #5C9CCE #8BB8DC

Accessibility & contrast

On white

4.35

#377EB6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.82

#377EB6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377EB6

4.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377EB6	#FFFFFF	#000000	##000000
##377EB6	1.00	4.35	4.82	4.82
#FFFFFF	4.35	1.00	21.00	21.00
#000000	4.82	21.00	1.00	1.00
##000000	4.82	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6580B8

Deuteranopia (green-blind)

#5374B5

Tritanopia (blue-blind)

#008C92

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #377eb6;
/* rgb */ color: rgb(55, 126, 182);
/* oklch */ color: oklch(57.4% 0.112 245.4);

Tailwind

colors: {
  custom: {
    50: '#7da3cc',
    500: '#377eb6',
    950: '#000000',
  },
}

SCSS

$custom: #377eb6;
$custom-light: #7da3cc;
$custom-dark: #000000;

JSON

{
  "hex": "#377eb6",
  "rgb": {
    "r": 55,
    "g": 126,
    "b": 182
  },
  "hsl": {
    "h": 206.457,
    "s": 53.586,
    "l": 46.471
  },
  "oklch": {
    "l": 0.57374,
    "c": 0.11188,
    "h": 245.4
  },
  "luminance": 0.19111
}

Semantic roles & 50–950 ramp

primary

#377EB6

secondary

#C6A082

accent

#8B4BDD

background

#F8FAFC

surface

#EFF3F8

border

#CACDD1

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #377EB6

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

Preview Lab → · Contrast checker → · Palette generator →