#377CB0#377CB0

#377CB0 is a mid, moderate cyan. Relative luminance 0.184; OKLCH L 56.6% C 0.106 H 244.2°. Best body text is #000000 at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#377CB0
RGB	rgb(55, 124, 176)
HSL	hsl(206, 52%, 45%)
HSV	hsv(206, 69%, 69%)
CMYK	cmyk(68.8%, 29.5%, 0%, 31%)
CIE-LAB	lab(49.93, -4.60, -33.89)
CIE-LCH	lch(49.93, 34.20, 262.27°)
OKLab	oklab(56.58% -0.0463 -0.0957)
OKLCH	oklch(56.58% 0.106 244.2)
XYZ	xyz(16.6167, 18.3603, 43.7341)
Luminance	0.1836 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377CB0 #B06B37

analogous

#37B0A7 #377CB0 #3740B0

triadic

#377CB0 #B0377C #7CB037

tetradic

#377CB0 #A737B0 #B06B37 #40B037

square

#377CB0 #A737B0 #B06B37 #40B037

split-complementary

#377CB0 #B03740 #B0A737

monochromatic

#1A3A53 #285B81 #377CB0 #599ACB #88B6DA

Accessibility & contrast

On white

4.49

#377CB0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.67

#377CB0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377CB0

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377CB0	#FFFFFF	#000000	##000000
##377CB0	1.00	4.49	4.67	4.67
#FFFFFF	4.49	1.00	21.00	21.00
#000000	4.67	21.00	1.00	1.00
##000000	4.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#657DB2

Deuteranopia (green-blind)

#5472AF

Tritanopia (blue-blind)

#00898E

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #377cb0;
/* rgb */ color: rgb(55, 124, 176);
/* oklch */ color: oklch(56.6% 0.106 244.2);

Tailwind

colors: {
  custom: {
    50: '#7ca1c8',
    500: '#377cb0',
    950: '#000000',
  },
}

SCSS

$custom: #377cb0;
$custom-light: #7ca1c8;
$custom-dark: #000000;

JSON

{
  "hex": "#377cb0",
  "rgb": {
    "r": 55,
    "g": 124,
    "b": 176
  },
  "hsl": {
    "h": 205.785,
    "s": 52.381,
    "l": 45.294
  },
  "oklch": {
    "l": 0.56582,
    "c": 0.10635,
    "h": 244.2
  },
  "luminance": 0.18362
}

Semantic roles & 50–950 ramp

primary

#377CB0

secondary

#C49D7F

accent

#8A4CDC

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0A0F13

muted

#7C7E82

Preview Lab

Preview with #377CB0

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

Preview Lab → · Contrast checker → · Palette generator →