#377AA6#377AA6

#377AA6 is a mid, moderate cyan. Relative luminance 0.175; OKLCH L 55.6% C 0.096 H 240.4°. Best body text is #FFFFFF at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#377AA6
RGB	rgb(55, 122, 166)
HSL	hsl(204, 50%, 43%)
HSV	hsv(204, 67%, 65%)
CMYK	cmyk(66.9%, 26.5%, 0%, 34.9%)
CIE-LAB	lab(48.86, -6.91, -29.75)
CIE-LCH	lch(48.86, 30.55, 256.93°)
OKLab	oklab(55.58% -0.0475 -0.0837)
OKLCH	oklch(55.58% 0.096 240.4)
XYZ	xyz(15.4154, 17.4829, 38.6311)
Luminance	0.1748 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377AA6 #A66337

analogous

#37A69A #377AA6 #3742A6

triadic

#377AA6 #A6377A #7AA637

tetradic

#377AA6 #9A37A6 #A66337 #42A637

square

#377AA6 #9A37A6 #A66337 #42A637

split-complementary

#377AA6 #A63742 #A69A37

monochromatic

#19364A #285878 #377AA6 #5499C6 #82B4D6

Accessibility & contrast

On white

4.67

#377AA6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.50

#377AA6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #377AA6

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377AA6	#FFFFFF	#000000	##FFFFFF
##377AA6	1.00	4.67	4.50	4.67
#FFFFFF	4.67	1.00	21.00	1.00
#000000	4.50	21.00	1.00	21.00
##FFFFFF	4.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#667AA8

Deuteranopia (green-blind)

#576FA5

Tritanopia (blue-blind)

#008589

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #377aa6;
/* rgb */ color: rgb(55, 122, 166);
/* oklch */ color: oklch(55.6% 0.096 240.4);

Tailwind

colors: {
  custom: {
    50: '#7aa0c0',
    500: '#377aa6',
    950: '#000000',
  },
}

SCSS

$custom: #377aa6;
$custom-light: #7aa0c0;
$custom-dark: #000000;

JSON

{
  "hex": "#377aa6",
  "rgb": {
    "r": 55,
    "g": 122,
    "b": 166
  },
  "hsl": {
    "h": 203.784,
    "s": 50.226,
    "l": 43.333
  },
  "oklch": {
    "l": 0.55585,
    "c": 0.0963,
    "h": 240.4
  },
  "luminance": 0.17484
}

Semantic roles & 50–950 ramp

primary

#377AA6

secondary

#BF957A

accent

#854EDA

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #377AA6

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

Preview Lab → · Contrast checker → · Palette generator →