#377FB2#377FB2

#377FB2 is a mid, moderate cyan. Relative luminance 0.192; OKLCH L 57.4% C 0.106 H 242.7°. Best body text is #000000 at 4.84:1 contrast (WCAG AA passes).

Color values

HEX	#377FB2
RGB	rgb(55, 127, 178)
HSL	hsl(205, 53%, 46%)
HSV	hsv(205, 69%, 70%)
CMYK	cmyk(69.1%, 28.7%, 0%, 30.2%)
CIE-LAB	lab(50.92, -5.67, -33.49)
CIE-LCH	lch(50.92, 33.97, 260.40°)
OKLab	oklab(57.4% -0.0488 -0.0945)
OKLCH	oklch(57.4% 0.106 242.7)
XYZ	xyz(17.1977, 19.2035, 44.9111)
Luminance	0.1920 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377FB2 #B26A37

analogous

#37B2A7 #377FB2 #3741B2

triadic

#377FB2 #B2377F #7FB237

tetradic

#377FB2 #A737B2 #B26A37 #41B237

square

#377FB2 #A737B2 #B26A37 #41B237

split-complementary

#377FB2 #B23741 #B2A737

monochromatic

#1A3C54 #295E83 #377FB2 #5A9DCC #89B9DB

Accessibility & contrast

On white

4.34

#377FB2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.84

#377FB2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377FB2

4.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377FB2	#FFFFFF	#000000	##000000
##377FB2	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)

#6880B4

Deuteranopia (green-blind)

#5774B1

Tritanopia (blue-blind)

#008C91

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #377fb2;
/* rgb */ color: rgb(55, 127, 178);
/* oklch */ color: oklch(57.4% 0.106 242.7);

Tailwind

colors: {
  custom: {
    50: '#7ca3c9',
    500: '#377fb2',
    950: '#000000',
  },
}

SCSS

$custom: #377fb2;
$custom-light: #7ca3c9;
$custom-dark: #000000;

JSON

{
  "hex": "#377fb2",
  "rgb": {
    "r": 55,
    "g": 127,
    "b": 178
  },
  "hsl": {
    "h": 204.878,
    "s": 52.79,
    "l": 45.686
  },
  "oklch": {
    "l": 0.57398,
    "c": 0.10638,
    "h": 242.7
  },
  "luminance": 0.19205
}

Semantic roles & 50–950 ramp

primary

#377FB2

secondary

#C59D80

accent

#884CDC

background

#F8FAFC

surface

#EFF3F8

border

#CACDD1

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #377FB2

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

Preview Lab → · Contrast checker → · Palette generator →