#3153BB#3153BB

#3153BB is a mid, vivid blue. Relative luminance 0.104; OKLCH L 48.0% C 0.169 H 266.3°. Best body text is #FFFFFF at 6.81:1 contrast (WCAG AA passes).

Color values

HEX	#3153BB
RGB	rgb(49, 83, 187)
HSL	hsl(225, 58%, 46%)
HSV	hsv(225, 74%, 73%)
CMYK	cmyk(73.8%, 55.6%, 0%, 26.7%)
CIE-LAB	lab(38.60, 24.43, -58.41)
CIE-LCH	lch(38.60, 63.32, 292.69°)
OKLab	oklab(47.96% -0.0108 -0.1684)
OKLCH	oklch(47.96% 0.169 266.3)
XYZ	xyz(13.3264, 10.4259, 48.3141)
Luminance	0.1043 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3153BB #BB9931

analogous

#3198BB #3153BB #5431BB

triadic

#3153BB #BB3153 #53BB31

tetradic

#3153BB #BB3198 #BB9931 #31BB54

square

#3153BB #BB3198 #BB9931 #31BB54

split-complementary

#3153BB #BB5431 #98BB31

monochromatic

#18285A #243D8B #3153BB #5675D3 #879DE0

Accessibility & contrast

On white

6.81

#3153BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.09

#3153BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3153BB

6.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3153BB	#FFFFFF	#000000	##FFFFFF
##3153BB	1.00	6.81	3.09	6.81
#FFFFFF	6.81	1.00	21.00	1.00
#000000	3.09	21.00	1.00	21.00
##FFFFFF	6.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0061BF

Deuteranopia (green-blind)

#0055B9

Tritanopia (blue-blind)

#006D7F

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #3153bb;
/* rgb */ color: rgb(49, 83, 187);
/* oklch */ color: oklch(48.0% 0.169 266.3);

Tailwind

colors: {
  custom: {
    50: '#7c82d0',
    500: '#3153bb',
    950: '#000000',
  },
}

SCSS

$custom: #3153bb;
$custom-light: #7c82d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3153bb",
  "rgb": {
    "r": 49,
    "g": 83,
    "b": 187
  },
  "hsl": {
    "h": 225.217,
    "s": 58.475,
    "l": 46.275
  },
  "oklch": {
    "l": 0.47964,
    "c": 0.16871,
    "h": 266.3
  },
  "luminance": 0.10427
}

Semantic roles & 50–950 ramp

primary

#3153BB

secondary

#C9B77F

accent

#BB46E2

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #3153BB

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

Preview Lab → · Contrast checker → · Palette generator →