#377DB7#377DB7

#377DB7 is a mid, moderate cyan. Relative luminance 0.189; OKLCH L 57.2% C 0.114 H 246.6°. Best body text is #000000 at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#377DB7
RGB	rgb(55, 125, 183)
HSL	hsl(207, 54%, 47%)
HSV	hsv(207, 70%, 72%)
CMYK	cmyk(69.9%, 31.7%, 0%, 28.2%)
CIE-LAB	lab(50.57, -2.73, -36.94)
CIE-LCH	lch(50.57, 37.04, 265.78°)
OKLab	oklab(57.19% -0.0452 -0.1046)
OKLCH	oklch(57.19% 0.114 246.6)
XYZ	xyz(17.4532, 18.8965, 47.5181)
Luminance	0.1890 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377DB7 #B77137

analogous

#37B7B1 #377DB7 #373DB7

triadic

#377DB7 #B7377D #7DB737

tetradic

#377DB7 #B137B7 #B77137 #3DB737

square

#377DB7 #B137B7 #B77137 #3DB737

split-complementary

#377DB7 #B7373D #B7B137

monochromatic

#1B3D59 #295D88 #377DB7 #5D9BCE #8CB8DC

Accessibility & contrast

On white

4.39

#377DB7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.78

#377DB7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377DB7

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377DB7	#FFFFFF	#000000	##000000
##377DB7	1.00	4.39	4.78	4.78
#FFFFFF	4.39	1.00	21.00	21.00
#000000	4.78	21.00	1.00	1.00
##000000	4.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#637FBA

Deuteranopia (green-blind)

#5173B6

Tritanopia (blue-blind)

#008B92

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #377db7;
/* rgb */ color: rgb(55, 125, 183);
/* oklch */ color: oklch(57.2% 0.114 246.6);

Tailwind

colors: {
  custom: {
    50: '#7da2cd',
    500: '#377db7',
    950: '#000000',
  },
}

SCSS

$custom: #377db7;
$custom-light: #7da2cd;
$custom-dark: #000000;

JSON

{
  "hex": "#377db7",
  "rgb": {
    "r": 55,
    "g": 125,
    "b": 183
  },
  "hsl": {
    "h": 207.188,
    "s": 53.782,
    "l": 46.667
  },
  "oklch": {
    "l": 0.57194,
    "c": 0.11392,
    "h": 246.6
  },
  "luminance": 0.18898
}

Semantic roles & 50–950 ramp

primary

#377DB7

secondary

#C7A283

accent

#8D4BDD

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0F13

muted

#7C7E82

Preview Lab

Preview with #377DB7

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

Preview Lab → · Contrast checker → · Palette generator →