#377AB3#377AB3

#377AB3 is a mid, moderate cyan. Relative luminance 0.180; OKLCH L 56.3% C 0.112 H 247.1°. Best body text is #000000 at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#377AB3
RGB	rgb(55, 122, 179)
HSL	hsl(208, 53%, 46%)
HSV	hsv(208, 69%, 70%)
CMYK	cmyk(69.3%, 31.8%, 0%, 29.8%)
CIE-LAB	lab(49.48, -2.36, -36.34)
CIE-LCH	lch(49.48, 36.42, 266.29°)
OKLab	oklab(56.27% -0.0434 -0.1029)
OKLCH	oklch(56.27% 0.112 247.1)
XYZ	xyz(16.6687, 17.9842, 45.2319)
Luminance	0.1799 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377AB3 #B37037

analogous

#37B3AE #377AB3 #373CB3

triadic

#377AB3 #B3377A #7AB337

tetradic

#377AB3 #AE37B3 #B37037 #3CB337

square

#377AB3 #AE37B3 #B37037 #3CB337

split-complementary

#377AB3 #B3373C #B3AE37

monochromatic

#1A3A55 #295A84 #377AB3 #5B98CD #8AB5DB

Accessibility & contrast

On white

4.57

#377AB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.60

#377AB3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377AB3

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377AB3	#FFFFFF	#000000	##000000
##377AB3	1.00	4.57	4.60	4.60
#FFFFFF	4.57	1.00	21.00	21.00
#000000	4.60	21.00	1.00	1.00
##000000	4.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#617CB5

Deuteranopia (green-blind)

#4F70B2

Tritanopia (blue-blind)

#00888E

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #377ab3;
/* rgb */ color: rgb(55, 122, 179);
/* oklch */ color: oklch(56.3% 0.112 247.1);

Tailwind

colors: {
  custom: {
    50: '#7ca0ca',
    500: '#377ab3',
    950: '#000000',
  },
}

SCSS

$custom: #377ab3;
$custom-light: #7ca0ca;
$custom-dark: #000000;

JSON

{
  "hex": "#377ab3",
  "rgb": {
    "r": 55,
    "g": 122,
    "b": 179
  },
  "hsl": {
    "h": 207.581,
    "s": 52.991,
    "l": 45.882
  },
  "oklch": {
    "l": 0.56272,
    "c": 0.11164,
    "h": 247.1
  },
  "luminance": 0.17986
}

Semantic roles & 50–950 ramp

primary

#377AB3

secondary

#C5A081

accent

#8E4BDC

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #377AB3

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

Preview Lab → · Contrast checker → · Palette generator →