#315BB3#315BB3

#315BB3 is a mid, vivid blue. Relative luminance 0.114; OKLCH L 49.0% C 0.148 H 262.9°. Best body text is #FFFFFF at 6.41:1 contrast (WCAG AA passes).

Color values

HEX	#315BB3
RGB	rgb(49, 91, 179)
HSL	hsl(221, 57%, 45%)
HSV	hsv(221, 73%, 70%)
CMYK	cmyk(72.6%, 49.2%, 0%, 29.8%)
CIE-LAB	lab(40.23, 16.19, -51.08)
CIE-LCH	lch(40.23, 53.59, 287.58°)
OKLab	oklab(49.02% -0.0182 -0.1466)
OKLCH	oklch(49.02% 0.148 262.9)
XYZ	xyz(13.1415, 11.3884, 44.1447)
Luminance	0.1139 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#315BB3 #B38931

analogous

#319CB3 #315BB3 #4831B3

triadic

#315BB3 #B3315B #5BB331

tetradic

#315BB3 #B3319C #B38931 #31B348

square

#315BB3 #B3319C #B38931 #31B348

split-complementary

#315BB3 #B34831 #9CB331

monochromatic

#172A53 #244383 #315BB3 #527AD0 #829FDD

Accessibility & contrast

On white

6.41

#315BB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.28

#315BB3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #315BB3

6.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##315BB3	#FFFFFF	#000000	##FFFFFF
##315BB3	1.00	6.41	3.28	6.41
#FFFFFF	6.41	1.00	21.00	1.00
#000000	3.28	21.00	1.00	21.00
##FFFFFF	6.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2965B6

Deuteranopia (green-blind)

#0059B1

Tritanopia (blue-blind)

#00707E

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #315bb3;
/* rgb */ color: rgb(49, 91, 179);
/* oklch */ color: oklch(49.0% 0.148 262.9);

Tailwind

colors: {
  custom: {
    50: '#7a88ca',
    500: '#315bb3',
    950: '#000000',
  },
}

SCSS

$custom: #315bb3;
$custom-light: #7a88ca;
$custom-dark: #000000;

JSON

{
  "hex": "#315bb3",
  "rgb": {
    "r": 49,
    "g": 91,
    "b": 179
  },
  "hsl": {
    "h": 220.615,
    "s": 57.018,
    "l": 44.706
  },
  "oklch": {
    "l": 0.49022,
    "c": 0.14777,
    "h": 262.9
  },
  "luminance": 0.1139
}

Semantic roles & 50–950 ramp

primary

#315BB3

secondary

#C6AD7A

accent

#AF48E0

background

#F8F8FC

surface

#EFEFF8

border

#CACAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #315BB3

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

Preview Lab → · Contrast checker → · Palette generator →