#377FB0#377FB0

#377FB0 is a mid, moderate cyan. Relative luminance 0.191; OKLCH L 57.3% C 0.104 H 241.6°. Best body text is #000000 at 4.83:1 contrast (WCAG AA passes).

Color values

HEX	#377FB0
RGB	rgb(55, 127, 176)
HSL	hsl(204, 52%, 45%)
HSV	hsv(204, 69%, 69%)
CMYK	cmyk(68.8%, 27.8%, 0%, 31%)
CIE-LAB	lab(50.83, -6.36, -32.48)
CIE-LCH	lch(50.83, 33.10, 258.92°)
OKLab	oklab(57.29% -0.0494 -0.0916)
OKLCH	oklch(57.29% 0.104 241.6)
XYZ	xyz(16.9984, 19.1237, 43.8613)
Luminance	0.1913 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377FB0 #B06837

analogous

#37B0A5 #377FB0 #3742B0

triadic

#377FB0 #B0377F #7FB037

tetradic

#377FB0 #A537B0 #B06837 #42B037

square

#377FB0 #A537B0 #B06837 #42B037

split-complementary

#377FB0 #B03742 #B0A537

monochromatic

#1A3C53 #285D81 #377FB0 #599DCB #88B8DA

Accessibility & contrast

On white

4.35

#377FB0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.83

#377FB0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377FB0

4.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377FB0	#FFFFFF	#000000	##000000
##377FB0	1.00	4.35	4.83	4.83
#FFFFFF	4.35	1.00	21.00	21.00
#000000	4.83	21.00	1.00	1.00
##000000	4.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6980B2

Deuteranopia (green-blind)

#5874AF

Tritanopia (blue-blind)

#008B90

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #377fb0;
/* rgb */ color: rgb(55, 127, 176);
/* oklch */ color: oklch(57.3% 0.104 241.6);

Tailwind

colors: {
  custom: {
    50: '#7ca4c8',
    500: '#377fb0',
    950: '#000000',
  },
}

SCSS

$custom: #377fb0;
$custom-light: #7ca4c8;
$custom-dark: #000000;

JSON

{
  "hex": "#377fb0",
  "rgb": {
    "r": 55,
    "g": 127,
    "b": 176
  },
  "hsl": {
    "h": 204.298,
    "s": 52.381,
    "l": 45.294
  },
  "oklch": {
    "l": 0.57294,
    "c": 0.1041,
    "h": 241.6
  },
  "luminance": 0.19126
}

Semantic roles & 50–950 ramp

primary

#377FB0

secondary

#C49B7F

accent

#864CDC

background

#F8FAFC

surface

#EFF3F8

border

#CACDD1

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #377FB0

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

Preview Lab → · Contrast checker → · Palette generator →