#315DA4#315DA4

#315DA4 is a mid, vivid blue. Relative luminance 0.112; OKLCH L 48.4% C 0.124 H 259.5°. Best body text is #FFFFFF at 6.50:1 contrast (WCAG AA passes).

Color values

HEX	#315DA4
RGB	rgb(49, 93, 164)
HSL	hsl(217, 54%, 42%)
HSV	hsv(217, 70%, 64%)
CMYK	cmyk(70.1%, 43.3%, 0%, 35.7%)
CIE-LAB	lab(39.85, 9.26, -42.82)
CIE-LCH	lch(39.85, 43.81, 282.20°)
OKLab	oklab(48.43% -0.0226 -0.1223)
OKLCH	oklch(48.43% 0.124 259.5)
XYZ	xyz(11.8794, 11.1608, 36.6429)
Luminance	0.1116 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#315DA4 #A47831

analogous

#3197A4 #315DA4 #3E31A4

triadic

#315DA4 #A4315D #5DA431

tetradic

#315DA4 #A43197 #A47831 #31A43E

square

#315DA4 #A43197 #A47831 #31A43E

split-complementary

#315DA4 #A43E31 #97A431

monochromatic

#152846 #234275 #315DA4 #497AC9 #799DD7

Accessibility & contrast

On white

6.50

#315DA4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.23

#315DA4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #315DA4

6.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##315DA4	#FFFFFF	#000000	##FFFFFF
##315DA4	1.00	6.50	3.23	6.50
#FFFFFF	6.50	1.00	21.00	1.00
#000000	3.23	21.00	1.00	21.00
##FFFFFF	6.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B64A7

Deuteranopia (green-blind)

#2859A3

Tritanopia (blue-blind)

#006D78

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #315da4;
/* rgb */ color: rgb(49, 93, 164);
/* oklch */ color: oklch(48.4% 0.124 259.5);

Tailwind

colors: {
  custom: {
    50: '#778abf',
    500: '#315da4',
    950: '#000000',
  },
}

SCSS

$custom: #315da4;
$custom-light: #778abf;
$custom-dark: #000000;

JSON

{
  "hex": "#315da4",
  "rgb": {
    "r": 49,
    "g": 93,
    "b": 164
  },
  "hsl": {
    "h": 217.043,
    "s": 53.991,
    "l": 41.765
  },
  "oklch": {
    "l": 0.48426,
    "c": 0.1244,
    "h": 259.5
  },
  "luminance": 0.11162
}

Semantic roles & 50–950 ramp

primary

#315DA4

secondary

#BFA272

accent

#A54ADD

background

#F7F8FB

surface

#EEF0F7

border

#C9CBD0

text

#0A0B12

muted

#7C7C81

Preview Lab

Preview with #315DA4

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

Preview Lab → · Contrast checker → · Palette generator →