#378AAF#378AAF

#378AAF is a mid, moderate cyan. Relative luminance 0.221; OKLCH L 59.9% C 0.097 H 230.8°. Best body text is #000000 at 5.42:1 contrast (WCAG AA passes).

Color values

HEX	#378AAF
RGB	rgb(55, 138, 175)
HSL	hsl(199, 52%, 45%)
HSV	hsv(199, 69%, 69%)
CMYK	cmyk(68.6%, 21.1%, 0%, 31.4%)
CIE-LAB	lab(54.11, -12.98, -26.80)
CIE-LCH	lch(54.11, 29.78, 244.16°)
OKLab	oklab(59.89% -0.0612 -0.0751)
OKLCH	oklch(59.89% 0.097 230.8)
XYZ	xyz(18.3988, 22.0823, 43.8418)
Luminance	0.2208 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378AAF #AF5C37

analogous

#37AF98 #378AAF #374EAF

triadic

#378AAF #AF378A #8AAF37

tetradic

#378AAF #9837AF #AF5C37 #4EAF37

square

#378AAF #9837AF #AF5C37 #4EAF37

split-complementary

#378AAF #AF374E #AF9837

monochromatic

#1A4152 #286580 #378AAF #59A7CB #87C0D9

Accessibility & contrast

On white

3.88

#378AAF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.42

#378AAF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378AAF

5.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378AAF	#FFFFFF	#000000	##000000
##378AAF	1.00	3.88	5.42	5.42
#FFFFFF	3.88	1.00	21.00	21.00
#000000	5.42	21.00	1.00	1.00
##000000	5.42	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7788B1

Deuteranopia (green-blind)

#677CAE

Tritanopia (blue-blind)

#009496

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #378aaf;
/* rgb */ color: rgb(55, 138, 175);
/* oklch */ color: oklch(59.9% 0.097 230.8);

Tailwind

colors: {
  custom: {
    50: '#7cacc7',
    500: '#378aaf',
    950: '#000000',
  },
}

SCSS

$custom: #378aaf;
$custom-light: #7cacc7;
$custom-dark: #000000;

JSON

{
  "hex": "#378aaf",
  "rgb": {
    "r": 55,
    "g": 138,
    "b": 175
  },
  "hsl": {
    "h": 198.5,
    "s": 52.174,
    "l": 45.098
  },
  "oklch": {
    "l": 0.59888,
    "c": 0.09692,
    "h": 230.8
  },
  "luminance": 0.22084
}

Semantic roles & 50–950 ramp

primary

#378AAF

secondary

#C3947F

accent

#784CDC

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #378AAF

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

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