#377DB2#377DB2

#377DB2 is a mid, moderate cyan. Relative luminance 0.187; OKLCH L 56.9% C 0.108 H 244.3°. Best body text is #000000 at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#377DB2
RGB	rgb(55, 125, 178)
HSL	hsl(206, 53%, 46%)
HSV	hsv(206, 69%, 70%)
CMYK	cmyk(69.1%, 29.8%, 0%, 30.2%)
CIE-LAB	lab(50.32, -4.49, -34.43)
CIE-LCH	lch(50.32, 34.72, 262.57°)
OKLab	oklab(56.92% -0.0467 -0.0973)
OKLCH	oklch(56.92% 0.108 244.3)
XYZ	xyz(16.9420, 18.6920, 44.8259)
Luminance	0.1869 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377DB2 #B26C37

analogous

#37B2A9 #377DB2 #373FB2

triadic

#377DB2 #B2377D #7DB237

tetradic

#377DB2 #A937B2 #B26C37 #3FB237

square

#377DB2 #A937B2 #B26C37 #3FB237

split-complementary

#377DB2 #B2373F #B2A937

monochromatic

#1A3B54 #295C83 #377DB2 #5A9BCC #89B7DB

Accessibility & contrast

On white

4.43

#377DB2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.74

#377DB2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377DB2

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377DB2	#FFFFFF	#000000	##000000
##377DB2	1.00	4.43	4.74	4.74
#FFFFFF	4.43	1.00	21.00	21.00
#000000	4.74	21.00	1.00	1.00
##000000	4.74	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#657EB4

Deuteranopia (green-blind)

#5472B1

Tritanopia (blue-blind)

#008A90

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #377db2;
/* rgb */ color: rgb(55, 125, 178);
/* oklch */ color: oklch(56.9% 0.108 244.3);

Tailwind

colors: {
  custom: {
    50: '#7ca2c9',
    500: '#377db2',
    950: '#000000',
  },
}

SCSS

$custom: #377db2;
$custom-light: #7ca2c9;
$custom-dark: #000000;

JSON

{
  "hex": "#377db2",
  "rgb": {
    "r": 55,
    "g": 125,
    "b": 178
  },
  "hsl": {
    "h": 205.854,
    "s": 52.79,
    "l": 45.686
  },
  "oklch": {
    "l": 0.56924,
    "c": 0.10793,
    "h": 244.3
  },
  "luminance": 0.18694
}

Semantic roles & 50–950 ramp

primary

#377DB2

secondary

#C59E80

accent

#8A4CDC

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0F13

muted

#7C7E82

Preview Lab

Preview with #377DB2

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

Preview Lab → · Contrast checker → · Palette generator →