#4178DB#4178DB

#4178DB is a mid, vivid blue. Relative luminance 0.197; OKLCH L 58.6% C 0.162 H 261.1°. Best body text is #000000 at 4.93:1 contrast (WCAG AA passes).

Color values

HEX	#4178DB
RGB	rgb(65, 120, 219)
HSL	hsl(219, 68%, 56%)
HSV	hsv(219, 70%, 86%)
CMYK	cmyk(70.3%, 45.2%, 0%, 14.1%)
CIE-LAB	lab(51.46, 14.71, -56.02)
CIE-LCH	lch(51.46, 57.92, 284.71°)
OKLab	oklab(58.63% -0.0251 -0.1604)
OKLCH	oklch(58.63% 0.162 261.1)
XYZ	xyz(21.6780, 19.6689, 69.6581)
Luminance	0.1967 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4178DB #DBA441

analogous

#41C5DB #4178DB #5741DB

triadic

#4178DB #DB4178 #78DB41

tetradic

#4178DB #DB41C5 #DBA441 #41DB57

square

#4178DB #DB41C5 #DBA441 #41DB57

split-complementary

#4178DB #DB5741 #C5DB41

monochromatic

#1A4188 #235ABB #4178DB #749DE5 #A8C1EE

Accessibility & contrast

On white

4.26

#4178DB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.93

#4178DB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4178DB

4.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4178DB	#FFFFFF	#000000	##000000
##4178DB	1.00	4.26	4.93	4.93
#FFFFFF	4.26	1.00	21.00	21.00
#000000	4.93	21.00	1.00	1.00
##000000	4.93	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4682DF

Deuteranopia (green-blind)

#2674D9

Tritanopia (blue-blind)

#008F9F

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #4178db;
/* rgb */ color: rgb(65, 120, 219);
/* oklch */ color: oklch(58.6% 0.162 261.1);

Tailwind

colors: {
  custom: {
    50: '#879ee7',
    500: '#4178db',
    950: '#000000',
  },
}

SCSS

$custom: #4178db;
$custom-light: #879ee7;
$custom-dark: #000000;

JSON

{
  "hex": "#4178db",
  "rgb": {
    "r": 65,
    "g": 120,
    "b": 219
  },
  "hsl": {
    "h": 218.571,
    "s": 68.142,
    "l": 55.686
  },
  "oklch": {
    "l": 0.58629,
    "c": 0.16238,
    "h": 261.1
  },
  "luminance": 0.19671
}

Semantic roles & 50–950 ramp

primary

#4178DB

secondary

#DCC59C

accent

#AD3DEB

background

#F9F9FE

surface

#F1F2FC

border

#CBCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #4178DB

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

Preview Lab → · Contrast checker → · Palette generator →