#377AA5#377AA5

#377AA5 is a mid, moderate cyan. Relative luminance 0.174; OKLCH L 55.5% C 0.095 H 239.8°. Best body text is #FFFFFF at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#377AA5
RGB	rgb(55, 122, 165)
HSL	hsl(203, 50%, 43%)
HSV	hsv(203, 67%, 65%)
CMYK	cmyk(66.7%, 26.1%, 0%, 35.3%)
CIE-LAB	lab(48.82, -7.25, -29.24)
CIE-LCH	lch(48.82, 30.13, 256.07°)
OKLab	oklab(55.53% -0.0479 -0.0823)
OKLCH	oklch(55.53% 0.095 239.8)
XYZ	xyz(15.3240, 17.4463, 38.1499)
Luminance	0.1745 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377AA5 #A56237

analogous

#37A599 #377AA5 #3743A5

triadic

#377AA5 #A5377A #7AA537

tetradic

#377AA5 #9937A5 #A56237 #43A537

square

#377AA5 #9937A5 #A56237 #43A537

split-complementary

#377AA5 #A53743 #A59937

monochromatic

#183649 #285877 #377AA5 #5399C6 #81B4D5

Accessibility & contrast

On white

4.68

#377AA5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.49

#377AA5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #377AA5

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377AA5	#FFFFFF	#000000	##FFFFFF
##377AA5	1.00	4.68	4.49	4.68
#FFFFFF	4.68	1.00	21.00	1.00
#000000	4.49	21.00	1.00	21.00
##FFFFFF	4.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#667AA7

Deuteranopia (green-blind)

#576FA4

Tritanopia (blue-blind)

#008589

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #377aa5;
/* rgb */ color: rgb(55, 122, 165);
/* oklch */ color: oklch(55.5% 0.095 239.8);

Tailwind

colors: {
  custom: {
    50: '#7aa0c0',
    500: '#377aa5',
    950: '#000000',
  },
}

SCSS

$custom: #377aa5;
$custom-light: #7aa0c0;
$custom-dark: #000000;

JSON

{
  "hex": "#377aa5",
  "rgb": {
    "r": 55,
    "g": 122,
    "b": 165
  },
  "hsl": {
    "h": 203.455,
    "s": 50,
    "l": 43.137
  },
  "oklch": {
    "l": 0.55534,
    "c": 0.09518,
    "h": 239.8
  },
  "luminance": 0.17448
}

Semantic roles & 50–950 ramp

primary

#377AA5

secondary

#BF9479

accent

#854EDA

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #377AA5

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

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