#377AAB#377AAB

#377AAB is a mid, moderate cyan. Relative luminance 0.177; OKLCH L 55.8% C 0.102 H 243.3°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#377AAB
RGB	rgb(55, 122, 171)
HSL	hsl(205, 51%, 44%)
HSV	hsv(205, 68%, 67%)
CMYK	cmyk(67.8%, 28.7%, 0%, 32.9%)
CIE-LAB	lab(49.09, -5.17, -32.30)
CIE-LCH	lch(49.09, 32.72, 260.90°)
OKLab	oklab(55.84% -0.0459 -0.0911)
OKLCH	oklch(55.84% 0.102 243.3)
XYZ	xyz(15.8830, 17.6699, 41.0938)
Luminance	0.1767 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377AAB #AB6837

analogous

#37ABA2 #377AAB #3740AB

triadic

#377AAB #AB377A #7AAB37

tetradic

#377AAB #A237AB #AB6837 #40AB37

square

#377AAB #A237AB #AB6837 #40AB37

split-complementary

#377AAB #AB3740 #ABA237

monochromatic

#19384E #28597D #377AAB #5698C9 #85B5D8

Accessibility & contrast

On white

4.63

#377AAB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.53

#377AAB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #377AAB

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377AAB	#FFFFFF	#000000	##FFFFFF
##377AAB	1.00	4.63	4.53	4.63
#FFFFFF	4.63	1.00	21.00	1.00
#000000	4.53	21.00	1.00	21.00
##FFFFFF	4.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#647BAD

Deuteranopia (green-blind)

#5470AA

Tritanopia (blue-blind)

#00868B

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #377aab;
/* rgb */ color: rgb(55, 122, 171);
/* oklch */ color: oklch(55.8% 0.102 243.3);

Tailwind

colors: {
  custom: {
    50: '#7ba0c4',
    500: '#377aab',
    950: '#000000',
  },
}

SCSS

$custom: #377aab;
$custom-light: #7ba0c4;
$custom-dark: #000000;

JSON

{
  "hex": "#377aab",
  "rgb": {
    "r": 55,
    "g": 122,
    "b": 171
  },
  "hsl": {
    "h": 205.345,
    "s": 51.327,
    "l": 44.314
  },
  "oklch": {
    "l": 0.55843,
    "c": 0.10202,
    "h": 243.3
  },
  "luminance": 0.17672
}

Semantic roles & 50–950 ramp

primary

#377AAB

secondary

#C19A7C

accent

#894DDB

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #377AAB

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

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