#315AB3#315AB3

#315AB3 is a mid, vivid blue. Relative luminance 0.112; OKLCH L 48.8% C 0.149 H 263.3°. Best body text is #FFFFFF at 6.47:1 contrast (WCAG AA passes).

Color values

HEX	#315AB3
RGB	rgb(49, 90, 179)
HSL	hsl(221, 57%, 45%)
HSV	hsv(221, 73%, 70%)
CMYK	cmyk(72.6%, 49.7%, 0%, 29.8%)
CIE-LAB	lab(39.95, 16.84, -51.53)
CIE-LCH	lch(39.95, 54.22, 288.10°)
OKLab	oklab(48.81% -0.0173 -0.148)
OKLCH	oklch(48.81% 0.149 263.3)
XYZ	xyz(13.0566, 11.2186, 44.1164)
Luminance	0.1122 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#315AB3 #B38A31

analogous

#319BB3 #315AB3 #4931B3

triadic

#315AB3 #B3315A #5AB331

tetradic

#315AB3 #B3319B #B38A31 #31B349

square

#315AB3 #B3319B #B38A31 #31B349

split-complementary

#315AB3 #B34931 #9BB331

monochromatic

#172A53 #244283 #315AB3 #5279D0 #829EDD

Accessibility & contrast

On white

6.47

#315AB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.24

#315AB3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #315AB3

6.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##315AB3	#FFFFFF	#000000	##FFFFFF
##315AB3	1.00	6.47	3.24	6.47
#FFFFFF	6.47	1.00	21.00	1.00
#000000	3.24	21.00	1.00	21.00
##FFFFFF	6.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2764B6

Deuteranopia (green-blind)

#0058B1

Tritanopia (blue-blind)

#006F7E

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #315ab3;
/* rgb */ color: rgb(49, 90, 179);
/* oklch */ color: oklch(48.8% 0.149 263.3);

Tailwind

colors: {
  custom: {
    50: '#7a88ca',
    500: '#315ab3',
    950: '#000000',
  },
}

SCSS

$custom: #315ab3;
$custom-light: #7a88ca;
$custom-dark: #000000;

JSON

{
  "hex": "#315ab3",
  "rgb": {
    "r": 49,
    "g": 90,
    "b": 179
  },
  "hsl": {
    "h": 221.077,
    "s": 57.018,
    "l": 44.706
  },
  "oklch": {
    "l": 0.48808,
    "c": 0.14901,
    "h": 263.3
  },
  "luminance": 0.1122
}

Semantic roles & 50–950 ramp

primary

#315AB3

secondary

#C6AE7A

accent

#B048E0

background

#F8F8FC

surface

#EFEFF8

border

#CACAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #315AB3

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

Preview Lab → · Contrast checker → · Palette generator →