#4178D9#4178D9

#4178D9 is a mid, vivid blue. Relative luminance 0.196; OKLCH L 58.5% C 0.160 H 260.8°. Best body text is #000000 at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#4178D9
RGB	rgb(65, 120, 217)
HSL	hsl(218, 67%, 55%)
HSV	hsv(218, 70%, 85%)
CMYK	cmyk(70%, 44.7%, 0%, 14.9%)
CIE-LAB	lab(51.34, 13.99, -55.08)
CIE-LCH	lch(51.34, 56.83, 284.25°)
OKLab	oklab(58.5% -0.0255 -0.1577)
OKLCH	oklch(58.5% 0.16 260.8)
XYZ	xyz(21.4163, 19.5643, 68.2798)
Luminance	0.1957 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4178D9 #D9A241

analogous

#41C4D9 #4178D9 #5641D9

triadic

#4178D9 #D94178 #78D941

tetradic

#4178D9 #D941C4 #D9A241 #41D956

square

#4178D9 #D941C4 #D9A241 #41D956

split-complementary

#4178D9 #D95641 #C4D941

monochromatic

#1B4185 #255AB8 #4178D9 #749CE3 #A7C0ED

Accessibility & contrast

On white

4.27

#4178D9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.91

#4178D9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4178D9

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4178D9	#FFFFFF	#000000	##000000
##4178D9	1.00	4.27	4.91	4.91
#FFFFFF	4.27	1.00	21.00	21.00
#000000	4.91	21.00	1.00	1.00
##000000	4.91	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4782DD

Deuteranopia (green-blind)

#2A74D7

Tritanopia (blue-blind)

#008F9E

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #4178d9;
/* rgb */ color: rgb(65, 120, 217);
/* oklch */ color: oklch(58.5% 0.160 260.8);

Tailwind

colors: {
  custom: {
    50: '#879ee5',
    500: '#4178d9',
    950: '#000000',
  },
}

SCSS

$custom: #4178d9;
$custom-light: #879ee5;
$custom-dark: #000000;

JSON

{
  "hex": "#4178d9",
  "rgb": {
    "r": 65,
    "g": 120,
    "b": 217
  },
  "hsl": {
    "h": 218.289,
    "s": 66.667,
    "l": 55.294
  },
  "oklch": {
    "l": 0.58499,
    "c": 0.15971,
    "h": 260.8
  },
  "luminance": 0.19567
}

Semantic roles & 50–950 ramp

primary

#4178D9

secondary

#DBC49B

accent

#AC3EEA

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0D0E16

muted

#7D7E84

Preview Lab

Preview with #4178D9

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

Preview Lab → · Contrast checker → · Palette generator →