#5171CA#5171CA

#5171CA is a mid, vivid blue. Relative luminance 0.178; OKLCH L 56.8% C 0.142 H 267.0°. Best body text is #FFFFFF at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#5171CA
RGB	rgb(81, 113, 202)
HSL	hsl(224, 53%, 55%)
HSV	hsv(224, 60%, 79%)
CMYK	cmyk(59.9%, 44.1%, 0%, 20.8%)
CIE-LAB	lab(49.28, 15.80, -49.81)
CIE-LCH	lch(49.28, 52.26, 287.60°)
OKLab	oklab(56.83% -0.0075 -0.142)
OKLCH	oklch(56.83% 0.142 267)
XYZ	xyz(19.9555, 17.8222, 58.2541)
Luminance	0.1782 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5171CA #CAAA51

analogous

#51AECA #5171CA #6D51CA

triadic

#5171CA #CA5171 #71CA51

tetradic

#5171CA #CA51AE #CAAA51 #51CA6D

square

#5171CA #CA51AE #CAAA51 #51CA6D

split-complementary

#5171CA #CA6D51 #AECA51

monochromatic

#253C7B #3453AA #5171CA #8097D8 #AFBEE7

Accessibility & contrast

On white

4.60

#5171CA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.56

#5171CA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #5171CA

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5171CA	#FFFFFF	#000000	##FFFFFF
##5171CA	1.00	4.60	4.56	4.60
#FFFFFF	4.60	1.00	21.00	1.00
#000000	4.56	21.00	1.00	21.00
##FFFFFF	4.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#487BCD

Deuteranopia (green-blind)

#3770C8

Tritanopia (blue-blind)

#008594

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #5171ca;
/* rgb */ color: rgb(81, 113, 202);
/* oklch */ color: oklch(56.8% 0.142 267.0);

Tailwind

colors: {
  custom: {
    50: '#8c99db',
    500: '#5171ca',
    950: '#000000',
  },
}

SCSS

$custom: #5171ca;
$custom-light: #8c99db;
$custom-dark: #000000;

JSON

{
  "hex": "#5171ca",
  "rgb": {
    "r": 81,
    "g": 113,
    "b": 202
  },
  "hsl": {
    "h": 224.132,
    "s": 53.304,
    "l": 55.49
  },
  "oklch": {
    "l": 0.56831,
    "c": 0.14219,
    "h": 267
  },
  "luminance": 0.17824
}

Semantic roles & 50–950 ramp

primary

#5171CA

secondary

#D5C7A2

accent

#B64BDD

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0D15

muted

#7E7E83

Preview Lab

Preview with #5171CA

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

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