#315DAB#315DAB

#315DAB is a mid, vivid blue. Relative luminance 0.114; OKLCH L 48.9% C 0.134 H 260.9°. Best body text is #FFFFFF at 6.39:1 contrast (WCAG AA passes).

Color values

HEX	#315DAB
RGB	rgb(49, 93, 171)
HSL	hsl(218, 55%, 43%)
HSV	hsv(218, 71%, 67%)
CMYK	cmyk(71.3%, 45.6%, 0%, 32.9%)
CIE-LAB	lab(40.28, 11.88, -46.28)
CIE-LCH	lch(40.28, 47.78, 284.40°)
OKLab	oklab(48.9% -0.0212 -0.1325)
OKLCH	oklch(48.9% 0.134 260.9)
XYZ	xyz(12.5290, 11.4206, 40.0643)
Luminance	0.1142 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#315DAB #AB7F31

analogous

#319AAB #315DAB #4231AB

triadic

#315DAB #AB315D #5DAB31

tetradic

#315DAB #AB319A #AB7F31 #31AB42

square

#315DAB #AB319A #AB7F31 #31AB42

split-complementary

#315DAB #AB4231 #9AAB31

monochromatic

#16294C #23437B #315DAB #4D7BCC #7D9EDA

Accessibility & contrast

On white

6.39

#315DAB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.28

#315DAB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #315DAB

6.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##315DAB	#FFFFFF	#000000	##FFFFFF
##315DAB	1.00	6.39	3.28	6.39
#FFFFFF	6.39	1.00	21.00	1.00
#000000	3.28	21.00	1.00	21.00
##FFFFFF	6.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3665AE

Deuteranopia (green-blind)

#1E5AA9

Tritanopia (blue-blind)

#006F7B

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #315dab;
/* rgb */ color: rgb(49, 93, 171);
/* oklch */ color: oklch(48.9% 0.134 260.9);

Tailwind

colors: {
  custom: {
    50: '#788ac4',
    500: '#315dab',
    950: '#000000',
  },
}

SCSS

$custom: #315dab;
$custom-light: #788ac4;
$custom-dark: #000000;

JSON

{
  "hex": "#315dab",
  "rgb": {
    "r": 49,
    "g": 93,
    "b": 171
  },
  "hsl": {
    "h": 218.361,
    "s": 55.455,
    "l": 43.137
  },
  "oklch": {
    "l": 0.48897,
    "c": 0.13419,
    "h": 260.9
  },
  "luminance": 0.11422
}

Semantic roles & 50–950 ramp

primary

#315DAB

secondary

#C2A775

accent

#A949DF

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #315DAB

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

Preview Lab → · Contrast checker → · Palette generator →