#4173D8#4173D8

#4173D8 is a mid, vivid blue. Relative luminance 0.183; OKLCH L 57.4% C 0.164 H 262.6°. Best body text is #000000 at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#4173D8
RGB	rgb(65, 115, 216)
HSL	hsl(220, 66%, 55%)
HSV	hsv(220, 70%, 85%)
CMYK	cmyk(69.9%, 46.8%, 0%, 15.3%)
CIE-LAB	lab(49.91, 16.75, -56.82)
CIE-LCH	lch(49.91, 59.23, 286.42°)
OKLab	oklab(57.38% -0.0212 -0.1628)
OKLCH	oklch(57.38% 0.164 262.6)
XYZ	xyz(20.7010, 18.3410, 67.4016)
Luminance	0.1834 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4173D8 #D8A641

analogous

#41BFD8 #4173D8 #5A41D8

triadic

#4173D8 #D84173 #73D841

tetradic

#4173D8 #D841BF #D8A641 #41D85A

square

#4173D8 #D841BF #D8A641 #41D85A

split-complementary

#4173D8 #D85A41 #BFD841

monochromatic

#1B3E84 #2555B6 #4173D8 #7498E2 #A7BEED

Accessibility & contrast

On white

4.50

#4173D8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.67

#4173D8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4173D8

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4173D8	#FFFFFF	#000000	##000000
##4173D8	1.00	4.50	4.67	4.67
#FFFFFF	4.50	1.00	21.00	21.00
#000000	4.67	21.00	1.00	1.00
##000000	4.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E7EDC

Deuteranopia (green-blind)

#1A70D6

Tritanopia (blue-blind)

#008B9B

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #4173d8;
/* rgb */ color: rgb(65, 115, 216);
/* oklch */ color: oklch(57.4% 0.164 262.6);

Tailwind

colors: {
  custom: {
    50: '#879ae5',
    500: '#4173d8',
    950: '#000000',
  },
}

SCSS

$custom: #4173d8;
$custom-light: #879ae5;
$custom-dark: #000000;

JSON

{
  "hex": "#4173d8",
  "rgb": {
    "r": 65,
    "g": 115,
    "b": 216
  },
  "hsl": {
    "h": 220.132,
    "s": 65.939,
    "l": 55.098
  },
  "oklch": {
    "l": 0.57377,
    "c": 0.16422,
    "h": 262.6
  },
  "luminance": 0.18343
}

Semantic roles & 50–950 ramp

primary

#4173D8

secondary

#DAC59B

accent

#B13FE9

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0D0E16

muted

#7D7E84

Preview Lab

Preview with #4173D8

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

Preview Lab → · Contrast checker → · Palette generator →