#315AAB#315AAB

#315AAB is a mid, vivid blue. Relative luminance 0.109; OKLCH L 48.2% C 0.138 H 262.3°. Best body text is #FFFFFF at 6.60:1 contrast (WCAG AA passes).

Color values

HEX	#315AAB
RGB	rgb(49, 90, 171)
HSL	hsl(220, 55%, 43%)
HSV	hsv(220, 71%, 67%)
CMYK	cmyk(71.3%, 47.4%, 0%, 32.9%)
CIE-LAB	lab(39.42, 13.83, -47.66)
CIE-LCH	lch(39.42, 49.63, 286.18°)
OKLab	oklab(48.24% -0.0185 -0.1366)
OKLCH	oklch(48.24% 0.138 262.3)
XYZ	xyz(12.2709, 10.9043, 39.9782)
Luminance	0.1091 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#315AAB #AB8231

analogous

#3197AB #315AAB #4531AB

triadic

#315AAB #AB315A #5AAB31

tetradic

#315AAB #AB3197 #AB8231 #31AB45

square

#315AAB #AB3197 #AB8231 #31AB45

split-complementary

#315AAB #AB4531 #97AB31

monochromatic

#16284C #23417B #315AAB #4D78CC #7D9CDA

Accessibility & contrast

On white

6.60

#315AAB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.18

#315AAB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #315AAB

6.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##315AAB	#FFFFFF	#000000	##FFFFFF
##315AAB	1.00	6.60	3.18	6.60
#FFFFFF	6.60	1.00	21.00	1.00
#000000	3.18	21.00	1.00	21.00
##FFFFFF	6.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F63AE

Deuteranopia (green-blind)

#1358A9

Tritanopia (blue-blind)

#006D7A

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #315aab;
/* rgb */ color: rgb(49, 90, 171);
/* oklch */ color: oklch(48.2% 0.138 262.3);

Tailwind

colors: {
  custom: {
    50: '#7888c4',
    500: '#315aab',
    950: '#000000',
  },
}

SCSS

$custom: #315aab;
$custom-light: #7888c4;
$custom-dark: #000000;

JSON

{
  "hex": "#315aab",
  "rgb": {
    "r": 49,
    "g": 90,
    "b": 171
  },
  "hsl": {
    "h": 219.836,
    "s": 55.455,
    "l": 43.137
  },
  "oklch": {
    "l": 0.48235,
    "c": 0.13785,
    "h": 262.3
  },
  "luminance": 0.10906
}

Semantic roles & 50–950 ramp

primary

#315AAB

secondary

#C2A975

accent

#AC49DF

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #315AAB

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

Preview Lab → · Contrast checker → · Palette generator →