#4178BD#4178BD

#4178BD is a mid, vivid cyan. Relative luminance 0.182; OKLCH L 56.8% C 0.122 H 255.1°. Best body text is #000000 at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#4178BD
RGB	rgb(65, 120, 189)
HSL	hsl(213, 49%, 50%)
HSV	hsv(213, 66%, 74%)
CMYK	cmyk(65.6%, 36.5%, 0%, 25.9%)
CIE-LAB	lab(49.77, 4.04, -41.62)
CIE-LCH	lch(49.77, 41.81, 275.55°)
OKLab	oklab(56.77% -0.0314 -0.1182)
OKLCH	oklch(56.77% 0.122 255.1)
XYZ	xyz(18.0784, 18.2291, 50.7001)
Luminance	0.1823 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4178BD #BD8641

analogous

#41B6BD #4178BD #4841BD

triadic

#4178BD #BD4178 #78BD41

tetradic

#4178BD #BD41B6 #BD8641 #41BD48

square

#4178BD #BD41B6 #BD8641 #41BD48

split-complementary

#4178BD #BD4841 #B6BD41

monochromatic

#223E62 #315B8F #4178BD #6E98CD #9CB9DD

Accessibility & contrast

On white

4.52

#4178BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.65

#4178BD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4178BD

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4178BD	#FFFFFF	#000000	##000000
##4178BD	1.00	4.52	4.65	4.65
#FFFFFF	4.52	1.00	21.00	21.00
#000000	4.65	21.00	1.00	1.00
##000000	4.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A7DC0

Deuteranopia (green-blind)

#4871BC

Tritanopia (blue-blind)

#008891

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #4178bd;
/* rgb */ color: rgb(65, 120, 189);
/* oklch */ color: oklch(56.8% 0.122 255.1);

Tailwind

colors: {
  custom: {
    50: '#829ed1',
    500: '#4178bd',
    950: '#000000',
  },
}

SCSS

$custom: #4178bd;
$custom-light: #829ed1;
$custom-dark: #000000;

JSON

{
  "hex": "#4178bd",
  "rgb": {
    "r": 65,
    "g": 120,
    "b": 189
  },
  "hsl": {
    "h": 213.387,
    "s": 48.819,
    "l": 49.804
  },
  "oklch": {
    "l": 0.56774,
    "c": 0.12226,
    "h": 255.1
  },
  "luminance": 0.18231
}

Semantic roles & 50–950 ramp

primary

#4178BD

secondary

#C9B091

accent

#9C4FD8

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #4178BD

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

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