#4151AA#4151AA

#4151AA is a mid, vivid blue. Relative luminance 0.099; OKLCH L 47.1% C 0.143 H 272.1°. Best body text is #FFFFFF at 7.04:1 contrast (WCAG AA passes).

Color values

HEX	#4151AA
RGB	rgb(65, 81, 170)
HSL	hsl(231, 45%, 46%)
HSV	hsv(231, 62%, 67%)
CMYK	cmyk(61.8%, 52.4%, 0%, 33.3%)
CIE-LAB	lab(37.68, 22.04, -49.83)
CIE-LCH	lch(37.68, 54.48, 293.86°)
OKLab	oklab(47.11% 0.0053 -0.1428)
OKLCH	oklch(47.11% 0.143 272.1)
XYZ	xyz(12.3757, 9.9099, 39.2831)
Luminance	0.0991 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4151AA #AA9A41

analogous

#4185AA #4151AA #6541AA

triadic

#4151AA #AA4151 #51AA41

tetradic

#4151AA #AA4185 #AA9A41 #41AA65

square

#4151AA #AA4185 #AA9A41 #41AA65

split-complementary

#4151AA #AA6541 #85AA41

monochromatic

#1F2751 #303C7E #4151AA #6473C4 #919BD5

Accessibility & contrast

On white

7.04

#4151AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.98

#4151AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4151AA

7.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4151AA	#FFFFFF	#000000	##FFFFFF
##4151AA	1.00	7.04	2.98	7.04
#FFFFFF	7.04	1.00	21.00	1.00
#000000	2.98	21.00	1.00	21.00
##FFFFFF	7.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D5DAD

Deuteranopia (green-blind)

#0054A8

Tritanopia (blue-blind)

#006675

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #4151aa;
/* rgb */ color: rgb(65, 81, 170);
/* oklch */ color: oklch(47.1% 0.143 272.1);

Tailwind

colors: {
  custom: {
    50: '#8081c4',
    500: '#4151aa',
    950: '#000000',
  },
}

SCSS

$custom: #4151aa;
$custom-light: #8081c4;
$custom-dark: #000000;

JSON

{
  "hex": "#4151aa",
  "rgb": {
    "r": 65,
    "g": 81,
    "b": 170
  },
  "hsl": {
    "h": 230.857,
    "s": 44.681,
    "l": 46.078
  },
  "oklch": {
    "l": 0.47114,
    "c": 0.14288,
    "h": 272.1
  },
  "luminance": 0.09911
}

Semantic roles & 50–950 ramp

primary

#4151AA

secondary

#C0B787

accent

#C153D4

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #4151AA

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

Preview Lab → · Contrast checker → · Palette generator →