#378F9B#378F9B

#378F9B is a mid, moderate teal. Relative luminance 0.228; OKLCH L 60.3% C 0.084 H 207.7°. Best body text is #000000 at 5.56:1 contrast (WCAG AA passes).

Color values

HEX	#378F9B
RGB	rgb(55, 143, 155)
HSL	hsl(187, 48%, 41%)
HSV	hsv(187, 65%, 61%)
CMYK	cmyk(64.5%, 7.7%, 0%, 39.2%)
CIE-LAB	lab(54.89, -22.13, -14.12)
CIE-LCH	lch(54.89, 26.25, 212.55°)
OKLab	oklab(60.26% -0.0746 -0.0392)
OKLCH	oklch(60.26% 0.084 207.7)
XYZ	xyz(17.3119, 22.8219, 34.4967)
Luminance	0.2282 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378F9B #9B4337

analogous

#379B75 #378F9B #375D9B

triadic

#378F9B #9B378F #8F9B37

tetradic

#378F9B #75379B #9B4337 #5D9B37

square

#378F9B #75379B #9B4337 #5D9B37

split-complementary

#378F9B #9B375D #9B7537

monochromatic

#173C41 #27656E #378F9B #4FB3C0 #7CC6D0

Accessibility & contrast

On white

3.77

#378F9B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.56

#378F9B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378F9B

5.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378F9B	#FFFFFF	#000000	##000000
##378F9B	1.00	3.77	5.56	5.56
#FFFFFF	3.77	1.00	21.00	21.00
#000000	5.56	21.00	1.00	1.00
##000000	5.56	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#838A9C

Deuteranopia (green-blind)

#747F9B

Tritanopia (blue-blind)

#009593

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #378f9b;
/* rgb */ color: rgb(55, 143, 155);
/* oklch */ color: oklch(60.3% 0.084 207.7);

Tailwind

colors: {
  custom: {
    50: '#7ab0b8',
    500: '#378f9b',
    950: '#000000',
  },
}

SCSS

$custom: #378f9b;
$custom-light: #7ab0b8;
$custom-dark: #000000;

JSON

{
  "hex": "#378f9b",
  "rgb": {
    "r": 55,
    "g": 143,
    "b": 155
  },
  "hsl": {
    "h": 187.2,
    "s": 47.619,
    "l": 41.176
  },
  "oklch": {
    "l": 0.60256,
    "c": 0.08424,
    "h": 207.7
  },
  "luminance": 0.22824
}

Semantic roles & 50–950 ramp

primary

#378F9B

secondary

#BA7D74

accent

#6151D7

background

#F7FAFB

surface

#EEF4F6

border

#C9CED0

text

#0A1011

muted

#7C7F80

Preview Lab

Preview with #378F9B

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

Preview Lab → · Contrast checker → · Palette generator →