#4378B2#4378B2

#4378B2 is a mid, moderate cyan. Relative luminance 0.178; OKLCH L 56.2% C 0.107 H 252.1°. Best body text is #FFFFFF at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#4378B2
RGB	rgb(67, 120, 178)
HSL	hsl(211, 45%, 48%)
HSV	hsv(211, 62%, 70%)
CMYK	cmyk(62.4%, 32.6%, 0%, 30.2%)
CIE-LAB	lab(49.30, 0.60, -36.01)
CIE-LCH	lch(49.30, 36.01, 270.96°)
OKLab	oklab(56.25% -0.0328 -0.1018)
OKLCH	oklch(56.25% 0.107 252.1)
XYZ	xyz(17.0642, 17.8390, 44.6548)
Luminance	0.1784 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4378B2 #B27D43

analogous

#43AFB2 #4378B2 #4543B2

triadic

#4378B2 #B24378 #78B243

tetradic

#4378B2 #B243AF #B27D43 #43B245

square

#4378B2 #B243AF #B27D43 #43B245

split-complementary

#4378B2 #B24543 #AFB243

monochromatic

#223C59 #325A86 #4378B2 #6B97C7 #97B6D8

Accessibility & contrast

On white

4.60

#4378B2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.57

#4378B2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #4378B2

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4378B2	#FFFFFF	#000000	##FFFFFF
##4378B2	1.00	4.60	4.57	4.60
#FFFFFF	4.60	1.00	21.00	1.00
#000000	4.57	21.00	1.00	21.00
##FFFFFF	4.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F7BB4

Deuteranopia (green-blind)

#5070B1

Tritanopia (blue-blind)

#00858D

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #4378b2;
/* rgb */ color: rgb(67, 120, 178);
/* oklch */ color: oklch(56.2% 0.107 252.1);

Tailwind

colors: {
  custom: {
    50: '#819ec9',
    500: '#4378b2',
    950: '#000000',
  },
}

SCSS

$custom: #4378b2;
$custom-light: #819ec9;
$custom-dark: #000000;

JSON

{
  "hex": "#4378b2",
  "rgb": {
    "r": 67,
    "g": 120,
    "b": 178
  },
  "hsl": {
    "h": 211.351,
    "s": 45.306,
    "l": 48.039
  },
  "oklch": {
    "l": 0.56245,
    "c": 0.10692,
    "h": 252.1
  },
  "luminance": 0.17841
}

Semantic roles & 50–950 ramp

primary

#4378B2

secondary

#C4AA8D

accent

#9753D5

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #4378B2

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

Preview Lab → · Contrast checker → · Palette generator →