#377BA8#377BA8

#377BA8 is a mid, moderate cyan. Relative luminance 0.178; OKLCH L 55.9% C 0.098 H 240.7°. Best body text is #FFFFFF at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#377BA8
RGB	rgb(55, 123, 168)
HSL	hsl(204, 51%, 44%)
HSV	hsv(204, 67%, 66%)
CMYK	cmyk(67.3%, 26.8%, 0%, 34.1%)
CIE-LAB	lab(49.26, -6.80, -30.30)
CIE-LCH	lch(49.26, 31.06, 257.35°)
OKLab	oklab(55.93% -0.0479 -0.0853)
OKLCH	oklch(55.93% 0.098 240.7)
XYZ	xyz(15.7237, 17.8036, 39.6460)
Luminance	0.1781 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377BA8 #A86437

analogous

#37A89C #377BA8 #3742A8

triadic

#377BA8 #A8377B #7BA837

tetradic

#377BA8 #9C37A8 #A86437 #42A837

square

#377BA8 #9C37A8 #A86437 #42A837

split-complementary

#377BA8 #A83742 #A89C37

monochromatic

#19374C #28597A #377BA8 #559AC7 #83B5D6

Accessibility & contrast

On white

4.60

#377BA8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.56

#377BA8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #377BA8

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377BA8	#FFFFFF	#000000	##FFFFFF
##377BA8	1.00	4.60	4.56	4.60
#FFFFFF	4.60	1.00	21.00	1.00
#000000	4.56	21.00	1.00	21.00
##FFFFFF	4.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#667BAA

Deuteranopia (green-blind)

#5770A7

Tritanopia (blue-blind)

#00868A

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #377ba8;
/* rgb */ color: rgb(55, 123, 168);
/* oklch */ color: oklch(55.9% 0.098 240.7);

Tailwind

colors: {
  custom: {
    50: '#7aa1c2',
    500: '#377ba8',
    950: '#000000',
  },
}

SCSS

$custom: #377ba8;
$custom-light: #7aa1c2;
$custom-dark: #000000;

JSON

{
  "hex": "#377ba8",
  "rgb": {
    "r": 55,
    "g": 123,
    "b": 168
  },
  "hsl": {
    "h": 203.894,
    "s": 50.673,
    "l": 43.725
  },
  "oklch": {
    "l": 0.55927,
    "c": 0.09786,
    "h": 240.7
  },
  "luminance": 0.17805
}

Semantic roles & 50–950 ramp

primary

#377BA8

secondary

#C0967B

accent

#864EDA

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #377BA8

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

Preview Lab → · Contrast checker → · Palette generator →