#4378B3#4378B3

#4378B3 is a mid, moderate cyan. Relative luminance 0.179; OKLCH L 56.3% C 0.108 H 252.5°. Best body text is #FFFFFF at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#4378B3
RGB	rgb(67, 120, 179)
HSL	hsl(212, 46%, 48%)
HSV	hsv(212, 63%, 70%)
CMYK	cmyk(62.6%, 33%, 0%, 29.8%)
CIE-LAB	lab(49.35, 0.94, -36.51)
CIE-LCH	lch(49.35, 36.52, 271.48°)
OKLab	oklab(56.3% -0.0325 -0.1032)
OKLCH	oklch(56.3% 0.108 252.5)
XYZ	xyz(17.1649, 17.8793, 45.1855)
Luminance	0.1788 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4378B3 #B37E43

analogous

#43B0B3 #4378B3 #4643B3

triadic

#4378B3 #B34378 #78B343

tetradic

#4378B3 #B343B0 #B37E43 #43B346

square

#4378B3 #B343B0 #B37E43 #43B346

split-complementary

#4378B3 #B34643 #B0B343

monochromatic

#223C5A #325A86 #4378B3 #6B97C8 #98B6D8

Accessibility & contrast

On white

4.59

#4378B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.58

#4378B3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #4378B3

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4378B3	#FFFFFF	#000000	##FFFFFF
##4378B3	1.00	4.59	4.58	4.59
#FFFFFF	4.59	1.00	21.00	1.00
#000000	4.58	21.00	1.00	21.00
##FFFFFF	4.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F7BB6

Deuteranopia (green-blind)

#5070B2

Tritanopia (blue-blind)

#00868D

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #4378b3;
/* rgb */ color: rgb(67, 120, 179);
/* oklch */ color: oklch(56.3% 0.108 252.5);

Tailwind

colors: {
  custom: {
    50: '#819eca',
    500: '#4378b3',
    950: '#000000',
  },
}

SCSS

$custom: #4378b3;
$custom-light: #819eca;
$custom-dark: #000000;

JSON

{
  "hex": "#4378b3",
  "rgb": {
    "r": 67,
    "g": 120,
    "b": 179
  },
  "hsl": {
    "h": 211.607,
    "s": 45.528,
    "l": 48.235
  },
  "oklch": {
    "l": 0.563,
    "c": 0.10822,
    "h": 252.5
  },
  "luminance": 0.17881
}

Semantic roles & 50–950 ramp

primary

#4378B3

secondary

#C4AA8D

accent

#9753D5

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #4378B3

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

Preview Lab → · Contrast checker → · Palette generator →