#377DB0#377DB0

#377DB0 is a mid, moderate cyan. Relative luminance 0.186; OKLCH L 56.8% C 0.106 H 243.3°. Best body text is #000000 at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#377DB0
RGB	rgb(55, 125, 176)
HSL	hsl(205, 52%, 45%)
HSV	hsv(205, 69%, 69%)
CMYK	cmyk(68.8%, 29%, 0%, 31%)
CIE-LAB	lab(50.23, -5.19, -33.42)
CIE-LCH	lch(50.23, 33.82, 261.17°)
OKLab	oklab(56.82% -0.0474 -0.0943)
OKLCH	oklch(56.82% 0.106 243.3)
XYZ	xyz(16.7426, 18.6123, 43.7760)
Luminance	0.1861 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377DB0 #B06A37

analogous

#37B0A6 #377DB0 #3741B0

triadic

#377DB0 #B0377D #7DB037

tetradic

#377DB0 #A637B0 #B06A37 #41B037

square

#377DB0 #A637B0 #B06A37 #41B037

split-complementary

#377DB0 #B03741 #B0A637

monochromatic

#1A3B53 #285C81 #377DB0 #599BCB #88B7DA

Accessibility & contrast

On white

4.45

#377DB0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.72

#377DB0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377DB0

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377DB0	#FFFFFF	#000000	##000000
##377DB0	1.00	4.45	4.72	4.72
#FFFFFF	4.45	1.00	21.00	21.00
#000000	4.72	21.00	1.00	1.00
##000000	4.72	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#667EB2

Deuteranopia (green-blind)

#5572AF

Tritanopia (blue-blind)

#00898F

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #377db0;
/* rgb */ color: rgb(55, 125, 176);
/* oklch */ color: oklch(56.8% 0.106 243.3);

Tailwind

colors: {
  custom: {
    50: '#7ca2c8',
    500: '#377db0',
    950: '#000000',
  },
}

SCSS

$custom: #377db0;
$custom-light: #7ca2c8;
$custom-dark: #000000;

JSON

{
  "hex": "#377db0",
  "rgb": {
    "r": 55,
    "g": 125,
    "b": 176
  },
  "hsl": {
    "h": 205.289,
    "s": 52.381,
    "l": 45.294
  },
  "oklch": {
    "l": 0.56819,
    "c": 0.10558,
    "h": 243.3
  },
  "luminance": 0.18614
}

Semantic roles & 50–950 ramp

primary

#377DB0

secondary

#C49C7F

accent

#894CDC

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0A0F13

muted

#7C7E82

Preview Lab

Preview with #377DB0

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

Preview Lab → · Contrast checker → · Palette generator →