#377AA9#377AA9

#377AA9 is a mid, moderate cyan. Relative luminance 0.176; OKLCH L 55.7% C 0.100 H 242.2°. Best body text is #FFFFFF at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#377AA9
RGB	rgb(55, 122, 169)
HSL	hsl(205, 51%, 44%)
HSV	hsv(205, 67%, 66%)
CMYK	cmyk(67.5%, 27.8%, 0%, 33.7%)
CIE-LAB	lab(49.00, -5.87, -31.29)
CIE-LCH	lch(49.00, 31.83, 259.38°)
OKLab	oklab(55.74% -0.0465 -0.0882)
OKLCH	oklch(55.74% 0.1 242.2)
XYZ	xyz(15.6938, 17.5942, 40.0974)
Luminance	0.1760 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377AA9 #A96637

analogous

#37A99F #377AA9 #3741A9

triadic

#377AA9 #A9377A #7AA937

tetradic

#377AA9 #9F37A9 #A96637 #41A937

square

#377AA9 #9F37A9 #A96637 #41A937

split-complementary

#377AA9 #A93741 #A99F37

monochromatic

#19374D #28597B #377AA9 #5599C8 #84B5D7

Accessibility & contrast

On white

4.65

#377AA9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.52

#377AA9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #377AA9

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377AA9	#FFFFFF	#000000	##FFFFFF
##377AA9	1.00	4.65	4.52	4.65
#FFFFFF	4.65	1.00	21.00	1.00
#000000	4.52	21.00	1.00	21.00
##FFFFFF	4.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#657BAB

Deuteranopia (green-blind)

#556FA8

Tritanopia (blue-blind)

#00868A

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #377aa9;
/* rgb */ color: rgb(55, 122, 169);
/* oklch */ color: oklch(55.7% 0.100 242.2);

Tailwind

colors: {
  custom: {
    50: '#7aa0c2',
    500: '#377aa9',
    950: '#000000',
  },
}

SCSS

$custom: #377aa9;
$custom-light: #7aa0c2;
$custom-dark: #000000;

JSON

{
  "hex": "#377aa9",
  "rgb": {
    "r": 55,
    "g": 122,
    "b": 169
  },
  "hsl": {
    "h": 204.737,
    "s": 50.893,
    "l": 43.922
  },
  "oklch": {
    "l": 0.55739,
    "c": 0.0997,
    "h": 242.2
  },
  "luminance": 0.17596
}

Semantic roles & 50–950 ramp

primary

#377AA9

secondary

#C0987B

accent

#884DDA

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #377AA9

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

Preview Lab → · Contrast checker → · Palette generator →