#515FBB#515FBB

#515FBB is a mid, vivid blue. Relative luminance 0.135; OKLCH L 52.2% C 0.144 H 273.8°. Best body text is #FFFFFF at 5.67:1 contrast (WCAG AA passes).

Color values

HEX	#515FBB
RGB	rgb(81, 95, 187)
HSL	hsl(232, 44%, 53%)
HSV	hsv(232, 57%, 73%)
CMYK	cmyk(56.7%, 49.2%, 0%, 26.7%)
CIE-LAB	lab(43.54, 22.03, -50.35)
CIE-LCH	lch(43.54, 54.96, 293.63°)
OKLab	oklab(52.16% 0.0096 -0.1438)
OKLCH	oklch(52.16% 0.144 273.8)
XYZ	xyz(16.4523, 13.5204, 48.7468)
Luminance	0.1352 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#515FBB #BBAD51

analogous

#5194BB #515FBB #7851BB

triadic

#515FBB #BB515F #5FBB51

tetradic

#515FBB #BB5194 #BBAD51 #51BB78

square

#515FBB #BB5194 #BBAD51 #51BB78

split-complementary

#515FBB #BB7851 #94BB51

monochromatic

#293169 #3A4695 #515FBB #7D87CC #A9B0DD

Accessibility & contrast

On white

5.67

#515FBB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.70

#515FBB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #515FBB

5.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##515FBB	#FFFFFF	#000000	##FFFFFF
##515FBB	1.00	5.67	3.70	5.67
#FFFFFF	5.67	1.00	21.00	1.00
#000000	3.70	21.00	1.00	21.00
##FFFFFF	5.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#316CBE

Deuteranopia (green-blind)

#2163B9

Tritanopia (blue-blind)

#117484

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #515fbb;
/* rgb */ color: rgb(81, 95, 187);
/* oklch */ color: oklch(52.2% 0.144 273.8);

Tailwind

colors: {
  custom: {
    50: '#8a8cd0',
    500: '#515fbb',
    950: '#000000',
  },
}

SCSS

$custom: #515fbb;
$custom-light: #8a8cd0;
$custom-dark: #000000;

JSON

{
  "hex": "#515fbb",
  "rgb": {
    "r": 81,
    "g": 95,
    "b": 187
  },
  "hsl": {
    "h": 232.075,
    "s": 43.802,
    "l": 52.549
  },
  "oklch": {
    "l": 0.52163,
    "c": 0.14409,
    "h": 273.8
  },
  "luminance": 0.13522
}

Semantic roles & 50–950 ramp

primary

#515FBB

secondary

#CBC59D

accent

#C354D4

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0C0C14

muted

#7D7D82

Preview Lab

Preview with #515FBB

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

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