#377AA8#377AA8

#377AA8 is a mid, moderate cyan. Relative luminance 0.176; OKLCH L 55.7% C 0.099 H 241.6°. Best body text is #FFFFFF at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#377AA8
RGB	rgb(55, 122, 168)
HSL	hsl(204, 51%, 44%)
HSV	hsv(204, 67%, 66%)
CMYK	cmyk(67.3%, 27.4%, 0%, 34.1%)
CIE-LAB	lab(48.95, -6.22, -30.78)
CIE-LCH	lch(48.95, 31.40, 258.58°)
OKLab	oklab(55.69% -0.0469 -0.0867)
OKLCH	oklch(55.69% 0.099 241.6)
XYZ	xyz(15.6003, 17.5568, 39.6048)
Luminance	0.1756 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377AA8 #A86537

analogous

#37A89D #377AA8 #3741A8

triadic

#377AA8 #A8377A #7AA837

tetradic

#377AA8 #9D37A8 #A86537 #41A837

square

#377AA8 #9D37A8 #A86537 #41A837

split-complementary

#377AA8 #A83741 #A89D37

monochromatic

#19374C #28597A #377AA8 #5599C7 #83B4D6

Accessibility & contrast

On white

4.65

#377AA8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.51

#377AA8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #377AA8

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377AA8	#FFFFFF	#000000	##FFFFFF
##377AA8	1.00	4.65	4.51	4.65
#FFFFFF	4.65	1.00	21.00	1.00
#000000	4.51	21.00	1.00	21.00
##FFFFFF	4.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#657AAA

Deuteranopia (green-blind)

#566FA7

Tritanopia (blue-blind)

#00858A

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #377aa8;
/* rgb */ color: rgb(55, 122, 168);
/* oklch */ color: oklch(55.7% 0.099 241.6);

Tailwind

colors: {
  custom: {
    50: '#7aa0c2',
    500: '#377aa8',
    950: '#000000',
  },
}

SCSS

$custom: #377aa8;
$custom-light: #7aa0c2;
$custom-dark: #000000;

JSON

{
  "hex": "#377aa8",
  "rgb": {
    "r": 55,
    "g": 122,
    "b": 168
  },
  "hsl": {
    "h": 204.425,
    "s": 50.673,
    "l": 43.725
  },
  "oklch": {
    "l": 0.55687,
    "c": 0.09856,
    "h": 241.6
  },
  "luminance": 0.17558
}

Semantic roles & 50–950 ramp

primary

#377AA8

secondary

#C0977B

accent

#874EDA

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #377AA8

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

Preview Lab → · Contrast checker → · Palette generator →