#377FB7#377FB7

#377FB7 is a mid, moderate cyan. Relative luminance 0.194; OKLCH L 57.7% C 0.112 H 245.1°. Best body text is #000000 at 4.88:1 contrast (WCAG AA passes).

Color values

HEX	#377FB7
RGB	rgb(55, 127, 183)
HSL	hsl(206, 54%, 47%)
HSV	hsv(206, 70%, 72%)
CMYK	cmyk(69.9%, 30.6%, 0%, 28.2%)
CIE-LAB	lab(51.16, -3.91, -36.00)
CIE-LCH	lch(51.16, 36.21, 263.80°)
OKLab	oklab(57.66% -0.0472 -0.1018)
OKLCH	oklch(57.66% 0.112 245.1)
XYZ	xyz(17.7089, 19.4079, 47.6034)
Luminance	0.1941 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377FB7 #B76F37

analogous

#37B7AF #377FB7 #373FB7

triadic

#377FB7 #B7377F #7FB737

tetradic

#377FB7 #AF37B7 #B76F37 #3FB737

square

#377FB7 #AF37B7 #B76F37 #3FB737

split-complementary

#377FB7 #B7373F #B7AF37

monochromatic

#1B3E59 #295E88 #377FB7 #5D9DCE #8CB9DC

Accessibility & contrast

On white

4.30

#377FB7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.88

#377FB7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377FB7

4.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377FB7	#FFFFFF	#000000	##000000
##377FB7	1.00	4.30	4.88	4.88
#FFFFFF	4.30	1.00	21.00	21.00
#000000	4.88	21.00	1.00	1.00
##000000	4.88	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6681B9

Deuteranopia (green-blind)

#5474B6

Tritanopia (blue-blind)

#008D93

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #377fb7;
/* rgb */ color: rgb(55, 127, 183);
/* oklch */ color: oklch(57.7% 0.112 245.1);

Tailwind

colors: {
  custom: {
    50: '#7da3cd',
    500: '#377fb7',
    950: '#000000',
  },
}

SCSS

$custom: #377fb7;
$custom-light: #7da3cd;
$custom-dark: #000000;

JSON

{
  "hex": "#377fb7",
  "rgb": {
    "r": 55,
    "g": 127,
    "b": 183
  },
  "hsl": {
    "h": 206.25,
    "s": 53.782,
    "l": 46.667
  },
  "oklch": {
    "l": 0.57663,
    "c": 0.11224,
    "h": 245.1
  },
  "luminance": 0.1941
}

Semantic roles & 50–950 ramp

primary

#377FB7

secondary

#C7A183

accent

#8B4BDD

background

#F8FAFC

surface

#EFF3F9

border

#CACDD2

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #377FB7

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

Preview Lab → · Contrast checker → · Palette generator →