#315EB5#315EB5

#315EB5 is a mid, vivid blue. Relative luminance 0.120; OKLCH L 49.8% C 0.147 H 262.0°. Best body text is #FFFFFF at 6.18:1 contrast (WCAG AA passes).

Color values

HEX	#315EB5
RGB	rgb(49, 94, 181)
HSL	hsl(220, 57%, 45%)
HSV	hsv(220, 73%, 71%)
CMYK	cmyk(72.9%, 48.1%, 0%, 29%)
CIE-LAB	lab(41.21, 14.99, -50.68)
CIE-LCH	lch(41.21, 52.85, 286.48°)
OKLab	oklab(49.81% -0.0205 -0.1454)
OKLCH	oklch(49.81% 0.147 262)
XYZ	xyz(13.6068, 11.9931, 45.3049)
Luminance	0.1200 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#315EB5 #B58831

analogous

#31A0B5 #315EB5 #4631B5

triadic

#315EB5 #B5315E #5EB531

tetradic

#315EB5 #B531A0 #B58831 #31B546

square

#315EB5 #B531A0 #B58831 #31B546

split-complementary

#315EB5 #B54631 #A0B531

monochromatic

#172C55 #244585 #315EB5 #537ED0 #83A2DD

Accessibility & contrast

On white

6.18

#315EB5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.40

#315EB5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #315EB5

6.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##315EB5	#FFFFFF	#000000	##FFFFFF
##315EB5	1.00	6.18	3.40	6.18
#FFFFFF	6.18	1.00	21.00	1.00
#000000	3.40	21.00	1.00	21.00
##FFFFFF	6.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E68B8

Deuteranopia (green-blind)

#085BB3

Tritanopia (blue-blind)

#007381

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #315eb5;
/* rgb */ color: rgb(49, 94, 181);
/* oklch */ color: oklch(49.8% 0.147 262.0);

Tailwind

colors: {
  custom: {
    50: '#7a8bcc',
    500: '#315eb5',
    950: '#000000',
  },
}

SCSS

$custom: #315eb5;
$custom-light: #7a8bcc;
$custom-dark: #000000;

JSON

{
  "hex": "#315eb5",
  "rgb": {
    "r": 49,
    "g": 94,
    "b": 181
  },
  "hsl": {
    "h": 219.545,
    "s": 57.391,
    "l": 45.098
  },
  "oklch": {
    "l": 0.49813,
    "c": 0.14686,
    "h": 262
  },
  "luminance": 0.11995
}

Semantic roles & 50–950 ramp

primary

#315EB5

secondary

#C7AD7B

accent

#AC47E1

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #315EB5

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

Preview Lab → · Contrast checker → · Palette generator →