#377AAD#377AAD

#377AAD is a mid, moderate cyan. Relative luminance 0.177; OKLCH L 55.9% C 0.104 H 244.3°. Best body text is #FFFFFF at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#377AAD
RGB	rgb(55, 122, 173)
HSL	hsl(206, 52%, 45%)
HSV	hsv(206, 68%, 68%)
CMYK	cmyk(68.2%, 29.5%, 0%, 32.2%)
CIE-LAB	lab(49.19, -4.47, -33.32)
CIE-LCH	lch(49.19, 33.62, 262.35°)
OKLab	oklab(55.95% -0.0452 -0.0941)
OKLCH	oklch(55.95% 0.104 244.3)
XYZ	xyz(16.0750, 17.7467, 42.1053)
Luminance	0.1775 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377AAD #AD6A37

analogous

#37ADA5 #377AAD #373FAD

triadic

#377AAD #AD377A #7AAD37

tetradic

#377AAD #A537AD #AD6A37 #3FAD37

square

#377AAD #A537AD #AD6A37 #3FAD37

split-complementary

#377AAD #AD373F #ADA537

monochromatic

#193950 #28597F #377AAD #5798CA #86B5D8

Accessibility & contrast

On white

4.62

#377AAD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.55

#377AAD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #377AAD

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377AAD	#FFFFFF	#000000	##FFFFFF
##377AAD	1.00	4.62	4.55	4.62
#FFFFFF	4.62	1.00	21.00	1.00
#000000	4.55	21.00	1.00	21.00
##FFFFFF	4.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#637BAF

Deuteranopia (green-blind)

#5370AC

Tritanopia (blue-blind)

#00868C

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #377aad;
/* rgb */ color: rgb(55, 122, 173);
/* oklch */ color: oklch(55.9% 0.104 244.3);

Tailwind

colors: {
  custom: {
    50: '#7ba0c5',
    500: '#377aad',
    950: '#000000',
  },
}

SCSS

$custom: #377aad;
$custom-light: #7ba0c5;
$custom-dark: #000000;

JSON

{
  "hex": "#377aad",
  "rgb": {
    "r": 55,
    "g": 122,
    "b": 173
  },
  "hsl": {
    "h": 205.932,
    "s": 51.754,
    "l": 44.706
  },
  "oklch": {
    "l": 0.55948,
    "c": 0.10439,
    "h": 244.3
  },
  "luminance": 0.17748
}

Semantic roles & 50–950 ramp

primary

#377AAD

secondary

#C29B7D

accent

#8A4DDB

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #377AAD

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

Preview Lab → · Contrast checker → · Palette generator →