#4178BC#4178BC

#4178BC is a mid, vivid cyan. Relative luminance 0.182; OKLCH L 56.7% C 0.121 H 254.8°. Best body text is #000000 at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#4178BC
RGB	rgb(65, 120, 188)
HSL	hsl(213, 49%, 50%)
HSV	hsv(213, 65%, 74%)
CMYK	cmyk(65.4%, 36.2%, 0%, 26.3%)
CIE-LAB	lab(49.72, 3.69, -41.12)
CIE-LCH	lch(49.72, 41.29, 275.13°)
OKLab	oklab(56.72% -0.0317 -0.1167)
OKLCH	oklch(56.72% 0.121 254.8)
XYZ	xyz(17.9703, 18.1858, 50.1304)
Luminance	0.1819 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4178BC #BC8541

analogous

#41B6BC #4178BC #4841BC

triadic

#4178BC #BC4178 #78BC41

tetradic

#4178BC #BC41B6 #BC8541 #41BC48

square

#4178BC #BC41B6 #BC8541 #41BC48

split-complementary

#4178BC #BC4841 #B6BC41

monochromatic

#223E61 #315B8F #4178BC #6E98CD #9BB8DC

Accessibility & contrast

On white

4.53

#4178BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.64

#4178BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4178BC

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4178BC	#FFFFFF	#000000	##000000
##4178BC	1.00	4.53	4.64	4.64
#FFFFFF	4.53	1.00	21.00	21.00
#000000	4.64	21.00	1.00	1.00
##000000	4.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A7DBF

Deuteranopia (green-blind)

#4971BB

Tritanopia (blue-blind)

#008891

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #4178bc;
/* rgb */ color: rgb(65, 120, 188);
/* oklch */ color: oklch(56.7% 0.121 254.8);

Tailwind

colors: {
  custom: {
    50: '#829ed0',
    500: '#4178bc',
    950: '#000000',
  },
}

SCSS

$custom: #4178bc;
$custom-light: #829ed0;
$custom-dark: #000000;

JSON

{
  "hex": "#4178bc",
  "rgb": {
    "r": 65,
    "g": 120,
    "b": 188
  },
  "hsl": {
    "h": 213.171,
    "s": 48.617,
    "l": 49.608
  },
  "oklch": {
    "l": 0.56716,
    "c": 0.12093,
    "h": 254.8
  },
  "luminance": 0.18188
}

Semantic roles & 50–950 ramp

primary

#4178BC

secondary

#C9AF90

accent

#9B50D8

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #4178BC

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

Preview Lab → · Contrast checker → · Palette generator →