#4178D7#4178D7

#4178D7 is a mid, vivid blue. Relative luminance 0.195; OKLCH L 58.4% C 0.157 H 260.5°. Best body text is #000000 at 4.89:1 contrast (WCAG AA passes).

Color values

HEX	#4178D7
RGB	rgb(65, 120, 215)
HSL	hsl(218, 65%, 55%)
HSV	hsv(218, 70%, 84%)
CMYK	cmyk(69.8%, 44.2%, 0%, 15.7%)
CIE-LAB	lab(51.22, 13.28, -54.14)
CIE-LCH	lch(51.22, 55.75, 283.78°)
OKLab	oklab(58.37% -0.0258 -0.1549)
OKLCH	oklch(58.37% 0.157 260.5)
XYZ	xyz(21.1578, 19.4608, 66.9181)
Luminance	0.1946 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4178D7 #D7A041

analogous

#41C3D7 #4178D7 #5541D7

triadic

#4178D7 #D74178 #78D741

tetradic

#4178D7 #D741C3 #D7A041 #41D755

square

#4178D7 #D741C3 #D7A041 #41D755

split-complementary

#4178D7 #D75541 #C3D741

monochromatic

#1B4182 #265AB5 #4178D7 #749CE2 #A6C0EC

Accessibility & contrast

On white

4.29

#4178D7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.89

#4178D7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4178D7

4.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4178D7	#FFFFFF	#000000	##000000
##4178D7	1.00	4.29	4.89	4.89
#FFFFFF	4.29	1.00	21.00	21.00
#000000	4.89	21.00	1.00	1.00
##000000	4.89	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4981DB

Deuteranopia (green-blind)

#2D74D5

Tritanopia (blue-blind)

#008E9D

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #4178d7;
/* rgb */ color: rgb(65, 120, 215);
/* oklch */ color: oklch(58.4% 0.157 260.5);

Tailwind

colors: {
  custom: {
    50: '#879ee4',
    500: '#4178d7',
    950: '#000000',
  },
}

SCSS

$custom: #4178d7;
$custom-light: #879ee4;
$custom-dark: #000000;

JSON

{
  "hex": "#4178d7",
  "rgb": {
    "r": 65,
    "g": 120,
    "b": 215
  },
  "hsl": {
    "h": 218,
    "s": 65.217,
    "l": 54.902
  },
  "oklch": {
    "l": 0.58369,
    "c": 0.15704,
    "h": 260.5
  },
  "luminance": 0.19463
}

Semantic roles & 50–950 ramp

primary

#4178D7

secondary

#D9C29A

accent

#AA40E8

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0D0E15

muted

#7D7E84

Preview Lab

Preview with #4178D7

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

Preview Lab → · Contrast checker → · Palette generator →