#315FC9#315FC9

#315FC9 is a mid, vivid blue. Relative luminance 0.131; OKLCH L 51.5% C 0.173 H 263.7°. Best body text is #FFFFFF at 5.82:1 contrast (WCAG AA passes).

Color values

HEX	#315FC9
RGB	rgb(49, 95, 201)
HSL	hsl(222, 61%, 49%)
HSV	hsv(222, 76%, 79%)
CMYK	cmyk(75.6%, 52.7%, 0%, 21.2%)
CIE-LAB	lab(42.84, 21.86, -59.67)
CIE-LCH	lch(42.84, 63.55, 290.12°)
OKLab	oklab(51.5% -0.0189 -0.1718)
OKLCH	oklch(51.5% 0.173 263.7)
XYZ	xyz(15.8977, 13.0526, 56.9286)
Luminance	0.1305 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#315FC9 #C99B31

analogous

#31ABC9 #315FC9 #4F31C9

triadic

#315FC9 #C9315F #5FC931

tetradic

#315FC9 #C931AB #C99B31 #31C94F

square

#315FC9 #C931AB #C99B31 #31C94F

split-complementary

#315FC9 #C94F31 #ABC931

monochromatic

#193067 #254898 #315FC9 #5F84D8 #90AAE4

Accessibility & contrast

On white

5.82

#315FC9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.61

#315FC9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #315FC9

5.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##315FC9	#FFFFFF	#000000	##FFFFFF
##315FC9	1.00	5.82	3.61	5.82
#FFFFFF	5.82	1.00	21.00	1.00
#000000	3.61	21.00	1.00	21.00
##FFFFFF	5.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#116DCD

Deuteranopia (green-blind)

#005FC7

Tritanopia (blue-blind)

#00798B

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #315fc9;
/* rgb */ color: rgb(49, 95, 201);
/* oklch */ color: oklch(51.5% 0.173 263.7);

Tailwind

colors: {
  custom: {
    50: '#7f8bda',
    500: '#315fc9',
    950: '#000000',
  },
}

SCSS

$custom: #315fc9;
$custom-light: #7f8bda;
$custom-dark: #000000;

JSON

{
  "hex": "#315fc9",
  "rgb": {
    "r": 49,
    "g": 95,
    "b": 201
  },
  "hsl": {
    "h": 221.842,
    "s": 60.8,
    "l": 49.02
  },
  "oklch": {
    "l": 0.51496,
    "c": 0.17288,
    "h": 263.7
  },
  "luminance": 0.13054
}

Semantic roles & 50–950 ramp

primary

#315FC9

secondary

#CFB987

accent

#B344E4

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #315FC9

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

Preview Lab → · Contrast checker → · Palette generator →