#377BA5#377BA5

#377BA5 is a mid, moderate cyan. Relative luminance 0.177; OKLCH L 55.8% C 0.095 H 238.8°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#377BA5
RGB	rgb(55, 123, 165)
HSL	hsl(203, 50%, 43%)
HSV	hsv(203, 67%, 65%)
CMYK	cmyk(66.7%, 25.5%, 0%, 35.3%)
CIE-LAB	lab(49.12, -7.84, -28.77)
CIE-LCH	lch(49.12, 29.82, 254.76°)
OKLab	oklab(55.78% -0.0489 -0.0809)
OKLCH	oklch(55.78% 0.095 238.8)
XYZ	xyz(15.4474, 17.6931, 38.1910)
Luminance	0.1769 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377BA5 #A56137

analogous

#37A598 #377BA5 #3744A5

triadic

#377BA5 #A5377B #7BA537

tetradic

#377BA5 #9837A5 #A56137 #44A537

square

#377BA5 #9837A5 #A56137 #44A537

split-complementary

#377BA5 #A53744 #A59837

monochromatic

#183749 #285977 #377BA5 #539AC6 #81B5D5

Accessibility & contrast

On white

4.63

#377BA5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.54

#377BA5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #377BA5

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377BA5	#FFFFFF	#000000	##FFFFFF
##377BA5	1.00	4.63	4.54	4.63
#FFFFFF	4.63	1.00	21.00	1.00
#000000	4.54	21.00	1.00	21.00
##FFFFFF	4.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#687BA7

Deuteranopia (green-blind)

#5870A4

Tritanopia (blue-blind)

#008689

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #377ba5;
/* rgb */ color: rgb(55, 123, 165);
/* oklch */ color: oklch(55.8% 0.095 238.8);

Tailwind

colors: {
  custom: {
    50: '#7aa1c0',
    500: '#377ba5',
    950: '#000000',
  },
}

SCSS

$custom: #377ba5;
$custom-light: #7aa1c0;
$custom-dark: #000000;

JSON

{
  "hex": "#377ba5",
  "rgb": {
    "r": 55,
    "g": 123,
    "b": 165
  },
  "hsl": {
    "h": 202.909,
    "s": 50,
    "l": 43.137
  },
  "oklch": {
    "l": 0.55775,
    "c": 0.09454,
    "h": 238.8
  },
  "luminance": 0.17695
}

Semantic roles & 50–950 ramp

primary

#377BA5

secondary

#BF9479

accent

#834EDA

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #377BA5

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

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