#315DA9#315DA9

#315DA9 is a mid, vivid blue. Relative luminance 0.113; OKLCH L 48.8% C 0.131 H 260.5°. Best body text is #FFFFFF at 6.42:1 contrast (WCAG AA passes).

Color values

HEX	#315DA9
RGB	rgb(49, 93, 169)
HSL	hsl(218, 55%, 43%)
HSV	hsv(218, 71%, 66%)
CMYK	cmyk(71%, 45%, 0%, 33.7%)
CIE-LAB	lab(40.16, 11.13, -45.30)
CIE-LCH	lch(40.16, 46.65, 283.80°)
OKLab	oklab(48.76% -0.0216 -0.1296)
OKLCH	oklch(48.76% 0.131 260.5)
XYZ	xyz(12.3398, 11.3450, 39.0679)
Luminance	0.1135 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#315DA9 #A97D31

analogous

#3199A9 #315DA9 #4131A9

triadic

#315DA9 #A9315D #5DA931

tetradic

#315DA9 #A93199 #A97D31 #31A941

square

#315DA9 #A93199 #A97D31 #31A941

split-complementary

#315DA9 #A94131 #99A931

monochromatic

#15294A #23437A #315DA9 #4C7BCB #7C9ED9

Accessibility & contrast

On white

6.42

#315DA9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.27

#315DA9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #315DA9

6.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##315DA9	#FFFFFF	#000000	##FFFFFF
##315DA9	1.00	6.42	3.27	6.42
#FFFFFF	6.42	1.00	21.00	1.00
#000000	3.27	21.00	1.00	21.00
##FFFFFF	6.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3765AC

Deuteranopia (green-blind)

#2159A7

Tritanopia (blue-blind)

#006F7B

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #315da9;
/* rgb */ color: rgb(49, 93, 169);
/* oklch */ color: oklch(48.8% 0.131 260.5);

Tailwind

colors: {
  custom: {
    50: '#788ac3',
    500: '#315da9',
    950: '#000000',
  },
}

SCSS

$custom: #315da9;
$custom-light: #788ac3;
$custom-dark: #000000;

JSON

{
  "hex": "#315da9",
  "rgb": {
    "r": 49,
    "g": 93,
    "b": 169
  },
  "hsl": {
    "h": 218,
    "s": 55.046,
    "l": 42.745
  },
  "oklch": {
    "l": 0.48761,
    "c": 0.1314,
    "h": 260.5
  },
  "luminance": 0.11346
}

Semantic roles & 50–950 ramp

primary

#315DA9

secondary

#C1A574

accent

#A849DE

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#0A0B12

muted

#7C7C81

Preview Lab

Preview with #315DA9

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

Preview Lab → · Contrast checker → · Palette generator →