#4178EE#4178EE

#4178EE is a mid, vivid blue. Relative luminance 0.207; OKLCH L 59.9% C 0.188 H 263.1°. Best body text is #000000 at 5.15:1 contrast (WCAG AA passes).

Color values

HEX	#4178EE
RGB	rgb(65, 120, 238)
HSL	hsl(221, 84%, 59%)
HSV	hsv(221, 73%, 93%)
CMYK	cmyk(72.7%, 49.6%, 0%, 6.7%)
CIE-LAB	lab(52.65, 21.54, -64.77)
CIE-LCH	lch(52.65, 68.26, 288.40°)
OKLab	oklab(59.92% -0.0224 -0.1862)
OKLCH	oklch(59.92% 0.188 263.1)
XYZ	xyz(24.3236, 20.7272, 83.5912)
Luminance	0.2073 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4178EE #EEB741

analogous

#41CEEE #4178EE #6141EE

triadic

#4178EE #EE4178 #78EE41

tetradic

#4178EE #EE41CE #EEB741 #41EE61

square

#4178EE #EE41CE #EEB741 #41EE61

split-complementary

#4178EE #EE6141 #CEEE41

monochromatic

#0F3FA6 #1454DE #4178EE #79A0F3 #B1C8F8

Accessibility & contrast

On white

4.08

#4178EE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.15

#4178EE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4178EE

5.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4178EE	#FFFFFF	#000000	##000000
##4178EE	1.00	4.08	5.15	5.15
#FFFFFF	4.08	1.00	21.00	21.00
#000000	5.15	21.00	1.00	1.00
##000000	5.15	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3186F2

Deuteranopia (green-blind)

#0076EC

Tritanopia (blue-blind)

#0094A8

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #4178ee;
/* rgb */ color: rgb(65, 120, 238);
/* oklch */ color: oklch(59.9% 0.188 263.1);

Tailwind

colors: {
  custom: {
    50: '#8b9ef4',
    500: '#4178ee',
    950: '#000000',
  },
}

SCSS

$custom: #4178ee;
$custom-light: #8b9ef4;
$custom-dark: #000000;

JSON

{
  "hex": "#4178ee",
  "rgb": {
    "r": 65,
    "g": 120,
    "b": 238
  },
  "hsl": {
    "h": 220.925,
    "s": 83.575,
    "l": 59.412
  },
  "oklch": {
    "l": 0.59921,
    "c": 0.18752,
    "h": 263.1
  },
  "luminance": 0.2073
}

Semantic roles & 50–950 ramp

primary

#4178EE

secondary

#E7D2A4

accent

#B92EFA

background

#F9F9FF

surface

#F2F2FE

border

#CCCCD6

text

#0E0E17

muted

#7E7E85

Preview Lab

Preview with #4178EE

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

Preview Lab → · Contrast checker → · Palette generator →