#377DB9#377DB9

#377DB9 is a mid, moderate cyan. Relative luminance 0.190; OKLCH L 57.3% C 0.116 H 247.4°. Best body text is #000000 at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#377DB9
RGB	rgb(55, 125, 185)
HSL	hsl(208, 54%, 47%)
HSV	hsv(208, 70%, 73%)
CMYK	cmyk(70.3%, 32.4%, 0%, 27.5%)
CIE-LAB	lab(50.66, -2.02, -37.93)
CIE-LCH	lch(50.66, 37.99, 266.95°)
OKLab	oklab(57.3% -0.0446 -0.1075)
OKLCH	oklch(57.3% 0.116 247.4)
XYZ	xyz(17.6628, 18.9803, 48.6222)
Luminance	0.1898 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377DB9 #B97337

analogous

#37B9B4 #377DB9 #373CB9

triadic

#377DB9 #B9377D #7DB937

tetradic

#377DB9 #B437B9 #B97337 #3CB937

square

#377DB9 #B437B9 #B97337 #3CB937

split-complementary

#377DB9 #B9373C #B9B437

monochromatic

#1B3D5B #295D8A #377DB9 #5E9BCF #8DB8DD

Accessibility & contrast

On white

4.38

#377DB9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.80

#377DB9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377DB9

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377DB9	#FFFFFF	#000000	##000000
##377DB9	1.00	4.38	4.80	4.80
#FFFFFF	4.38	1.00	21.00	21.00
#000000	4.80	21.00	1.00	1.00
##000000	4.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#627FBC

Deuteranopia (green-blind)

#5073B8

Tritanopia (blue-blind)

#008B92

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #377db9;
/* rgb */ color: rgb(55, 125, 185);
/* oklch */ color: oklch(57.3% 0.116 247.4);

Tailwind

colors: {
  custom: {
    50: '#7da2ce',
    500: '#377db9',
    950: '#000000',
  },
}

SCSS

$custom: #377db9;
$custom-light: #7da2ce;
$custom-dark: #000000;

JSON

{
  "hex": "#377db9",
  "rgb": {
    "r": 55,
    "g": 125,
    "b": 185
  },
  "hsl": {
    "h": 207.692,
    "s": 54.167,
    "l": 47.059
  },
  "oklch": {
    "l": 0.57303,
    "c": 0.11637,
    "h": 247.4
  },
  "luminance": 0.18982
}

Semantic roles & 50–950 ramp

primary

#377DB9

secondary

#C8A384

accent

#8E4ADE

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0F13

muted

#7C7E82

Preview Lab

Preview with #377DB9

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

Preview Lab → · Contrast checker → · Palette generator →