#3155B7#3155B7

#3155B7 is a mid, vivid blue. Relative luminance 0.106; OKLCH L 48.1% C 0.161 H 265.5°. Best body text is #FFFFFF at 6.74:1 contrast (WCAG AA passes).

Color values

HEX	#3155B7
RGB	rgb(49, 85, 183)
HSL	hsl(224, 58%, 45%)
HSV	hsv(224, 73%, 72%)
CMYK	cmyk(73.2%, 53.6%, 0%, 28.2%)
CIE-LAB	lab(38.84, 21.62, -55.67)
CIE-LCH	lch(38.84, 59.72, 291.22°)
OKLab	oklab(48.06% -0.0127 -0.1602)
OKLCH	oklch(48.06% 0.161 265.5)
XYZ	xyz(13.0594, 10.5675, 46.1420)
Luminance	0.1057 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3155B7 #B79331

analogous

#3198B7 #3155B7 #5031B7

triadic

#3155B7 #B73155 #55B731

tetradic

#3155B7 #B73198 #B79331 #31B750

square

#3155B7 #B73198 #B79331 #31B750

split-complementary

#3155B7 #B75031 #98B731

monochromatic

#172856 #243F87 #3155B7 #5476D1 #849CDE

Accessibility & contrast

On white

6.74

#3155B7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.11

#3155B7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3155B7

6.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3155B7	#FFFFFF	#000000	##FFFFFF
##3155B7	1.00	6.74	3.11	6.74
#FFFFFF	6.74	1.00	21.00	1.00
#000000	3.11	21.00	1.00	21.00
##FFFFFF	6.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0B62BA

Deuteranopia (green-blind)

#0056B5

Tritanopia (blue-blind)

#006D7E

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #3155b7;
/* rgb */ color: rgb(49, 85, 183);
/* oklch */ color: oklch(48.1% 0.161 265.5);

Tailwind

colors: {
  custom: {
    50: '#7b84cd',
    500: '#3155b7',
    950: '#000000',
  },
}

SCSS

$custom: #3155b7;
$custom-light: #7b84cd;
$custom-dark: #000000;

JSON

{
  "hex": "#3155b7",
  "rgb": {
    "r": 49,
    "g": 85,
    "b": 183
  },
  "hsl": {
    "h": 223.881,
    "s": 57.759,
    "l": 45.49
  },
  "oklch": {
    "l": 0.48057,
    "c": 0.16075,
    "h": 265.5
  },
  "luminance": 0.10569
}

Semantic roles & 50–950 ramp

primary

#3155B7

secondary

#C8B37C

accent

#B847E1

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #3155B7

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

Preview Lab → · Contrast checker → · Palette generator →