#377BA9#377BA9

#377BA9 is a mid, moderate cyan. Relative luminance 0.178; OKLCH L 56.0% C 0.099 H 241.3°. Best body text is #FFFFFF at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#377BA9
RGB	rgb(55, 123, 169)
HSL	hsl(204, 51%, 44%)
HSV	hsv(204, 67%, 66%)
CMYK	cmyk(67.5%, 27.2%, 0%, 33.7%)
CIE-LAB	lab(49.30, -6.46, -30.81)
CIE-LCH	lch(49.30, 31.48, 258.17°)
OKLab	oklab(55.98% -0.0476 -0.0868)
OKLCH	oklch(55.98% 0.099 241.3)
XYZ	xyz(15.8172, 17.8411, 40.1385)
Luminance	0.1784 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377BA9 #A96537

analogous

#37A99E #377BA9 #3742A9

triadic

#377BA9 #A9377B #7BA937

tetradic

#377BA9 #9E37A9 #A96537 #42A937

square

#377BA9 #9E37A9 #A96537 #42A937

split-complementary

#377BA9 #A93742 #A99E37

monochromatic

#19384D #28597B #377BA9 #559AC8 #84B5D7

Accessibility & contrast

On white

4.60

#377BA9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.57

#377BA9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #377BA9

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377BA9	#FFFFFF	#000000	##FFFFFF
##377BA9	1.00	4.60	4.57	4.60
#FFFFFF	4.60	1.00	21.00	1.00
#000000	4.57	21.00	1.00	21.00
##FFFFFF	4.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#667BAB

Deuteranopia (green-blind)

#5670A8

Tritanopia (blue-blind)

#00868B

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #377ba9;
/* rgb */ color: rgb(55, 123, 169);
/* oklch */ color: oklch(56.0% 0.099 241.3);

Tailwind

colors: {
  custom: {
    50: '#7aa1c2',
    500: '#377ba9',
    950: '#000000',
  },
}

SCSS

$custom: #377ba9;
$custom-light: #7aa1c2;
$custom-dark: #000000;

JSON

{
  "hex": "#377ba9",
  "rgb": {
    "r": 55,
    "g": 123,
    "b": 169
  },
  "hsl": {
    "h": 204.211,
    "s": 50.893,
    "l": 43.922
  },
  "oklch": {
    "l": 0.55978,
    "c": 0.09899,
    "h": 241.3
  },
  "luminance": 0.17843
}

Semantic roles & 50–950 ramp

primary

#377BA9

secondary

#C0977B

accent

#864DDA

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #377BA9

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

Preview Lab → · Contrast checker → · Palette generator →