#378AB9#378AB9

#378AB9 is a mid, moderate cyan. Relative luminance 0.225; OKLCH L 60.4% C 0.107 H 237.3°. Best body text is #000000 at 5.50:1 contrast (WCAG AA passes).

Color values

HEX	#378AB9
RGB	rgb(55, 138, 185)
HSL	hsl(202, 54%, 47%)
HSV	hsv(202, 70%, 73%)
CMYK	cmyk(70.3%, 25.4%, 0%, 27.5%)
CIE-LAB	lab(54.54, -9.58, -31.85)
CIE-LCH	lch(54.54, 33.27, 253.25°)
OKLab	oklab(60.37% -0.0577 -0.0897)
OKLCH	oklch(60.37% 0.107 237.3)
XYZ	xyz(19.4176, 22.4898, 49.2072)
Luminance	0.2249 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378AB9 #B96637

analogous

#37B9A7 #378AB9 #3749B9

triadic

#378AB9 #B9378A #8AB937

tetradic

#378AB9 #A737B9 #B96637 #49B937

square

#378AB9 #A737B9 #B96637 #49B937

split-complementary

#378AB9 #B93749 #B9A737

monochromatic

#1B445B #29678A #378AB9 #5EA6CF #8DC0DD

Accessibility & contrast

On white

3.82

#378AB9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.50

#378AB9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378AB9

5.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378AB9	#FFFFFF	#000000	##000000
##378AB9	1.00	3.82	5.50	5.50
#FFFFFF	3.82	1.00	21.00	21.00
#000000	5.50	21.00	1.00	1.00
##000000	5.50	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#748ABB

Deuteranopia (green-blind)

#627DB8

Tritanopia (blue-blind)

#00969A

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #378ab9;
/* rgb */ color: rgb(55, 138, 185);
/* oklch */ color: oklch(60.4% 0.107 237.3);

Tailwind

colors: {
  custom: {
    50: '#7eacce',
    500: '#378ab9',
    950: '#000000',
  },
}

SCSS

$custom: #378ab9;
$custom-light: #7eacce;
$custom-dark: #000000;

JSON

{
  "hex": "#378ab9",
  "rgb": {
    "r": 55,
    "g": 138,
    "b": 185
  },
  "hsl": {
    "h": 201.692,
    "s": 54.167,
    "l": 47.059
  },
  "oklch": {
    "l": 0.6037,
    "c": 0.10664,
    "h": 237.3
  },
  "luminance": 0.22492
}

Semantic roles & 50–950 ramp

primary

#378AB9

secondary

#C89D84

accent

#804ADE

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #378AB9

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

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