#378CBF#378CBF

#378CBF is a mid, moderate cyan. Relative luminance 0.233; OKLCH L 61.1% C 0.112 H 238.9°. Best body text is #000000 at 5.67:1 contrast (WCAG AA passes).

Color values

HEX	#378CBF
RGB	rgb(55, 140, 191)
HSL	hsl(203, 55%, 48%)
HSV	hsv(203, 71%, 75%)
CMYK	cmyk(71.2%, 26.7%, 0%, 25.1%)
CIE-LAB	lab(55.41, -8.66, -33.92)
CIE-LCH	lch(55.41, 35.01, 255.69°)
OKLab	oklab(61.15% -0.0577 -0.0956)
OKLCH	oklch(61.15% 0.112 238.9)
XYZ	xyz(20.3539, 23.3277, 52.7101)
Luminance	0.2333 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378CBF #BF6A37

analogous

#37BFAE #378CBF #3748BF

triadic

#378CBF #BF378C #8CBF37

tetradic

#378CBF #AE37BF #BF6A37 #48BF37

square

#378CBF #AE37BF #BF6A37 #48BF37

split-complementary

#378CBF #BF3748 #BFAE37

monochromatic

#1C4660 #29698F #378CBF #62A8D2 #91C2DF

Accessibility & contrast

On white

3.71

#378CBF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.67

#378CBF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378CBF

5.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378CBF	#FFFFFF	#000000	##000000
##378CBF	1.00	3.71	5.67	5.67
#FFFFFF	3.71	1.00	21.00	21.00
#000000	5.67	21.00	1.00	1.00
##000000	5.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#748CC1

Deuteranopia (green-blind)

#627FBE

Tritanopia (blue-blind)

#00999E

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #378cbf;
/* rgb */ color: rgb(55, 140, 191);
/* oklch */ color: oklch(61.1% 0.112 238.9);

Tailwind

colors: {
  custom: {
    50: '#7fadd2',
    500: '#378cbf',
    950: '#000000',
  },
}

SCSS

$custom: #378cbf;
$custom-light: #7fadd2;
$custom-dark: #000000;

JSON

{
  "hex": "#378cbf",
  "rgb": {
    "r": 55,
    "g": 140,
    "b": 191
  },
  "hsl": {
    "h": 202.5,
    "s": 55.285,
    "l": 48.235
  },
  "oklch": {
    "l": 0.61145,
    "c": 0.1117,
    "h": 238.9
  },
  "luminance": 0.2333
}

Semantic roles & 50–950 ramp

primary

#378CBF

secondary

#CAA188

accent

#8149DF

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B1014

muted

#7C7F82

Preview Lab

Preview with #378CBF

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

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