#4178BF#4178BF

#4178BF is a mid, vivid cyan. Relative luminance 0.183; OKLCH L 56.9% C 0.125 H 255.7°. Best body text is #000000 at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#4178BF
RGB	rgb(65, 120, 191)
HSL	hsl(214, 50%, 50%)
HSV	hsv(214, 66%, 75%)
CMYK	cmyk(66%, 37.2%, 0%, 25.1%)
CIE-LAB	lab(49.88, 4.75, -42.60)
CIE-LCH	lch(49.88, 42.86, 276.36°)
OKLab	oklab(56.89% -0.0309 -0.121)
OKLCH	oklch(56.89% 0.125 255.7)
XYZ	xyz(18.2970, 18.3165, 51.8513)
Luminance	0.1832 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4178BF #BF8841

analogous

#41B7BF #4178BF #4941BF

triadic

#4178BF #BF4178 #78BF41

tetradic

#4178BF #BF41B7 #BF8841 #41BF49

square

#4178BF #BF41B7 #BF8841 #41BF49

split-complementary

#4178BF #BF4941 #B7BF41

monochromatic

#223F64 #315B92 #4178BF #6F99CE #9DB9DE

Accessibility & contrast

On white

4.50

#4178BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.66

#4178BF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4178BF

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4178BF	#FFFFFF	#000000	##000000
##4178BF	1.00	4.50	4.66	4.66
#FFFFFF	4.50	1.00	21.00	21.00
#000000	4.66	21.00	1.00	1.00
##000000	4.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#597DC2

Deuteranopia (green-blind)

#4771BE

Tritanopia (blue-blind)

#008892

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #4178bf;
/* rgb */ color: rgb(65, 120, 191);
/* oklch */ color: oklch(56.9% 0.125 255.7);

Tailwind

colors: {
  custom: {
    50: '#829ed2',
    500: '#4178bf',
    950: '#000000',
  },
}

SCSS

$custom: #4178bf;
$custom-light: #829ed2;
$custom-dark: #000000;

JSON

{
  "hex": "#4178bf",
  "rgb": {
    "r": 65,
    "g": 120,
    "b": 191
  },
  "hsl": {
    "h": 213.81,
    "s": 49.606,
    "l": 50.196
  },
  "oklch": {
    "l": 0.5689,
    "c": 0.12491,
    "h": 255.7
  },
  "luminance": 0.18318
}

Semantic roles & 50–950 ramp

primary

#4178BF

secondary

#CAB192

accent

#9D4FD9

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0E14

muted

#7D7E82

Preview Lab

Preview with #4178BF

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

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