#3155BF#3155BF

#3155BF is a mid, vivid blue. Relative luminance 0.109; OKLCH L 48.7% C 0.172 H 266.0°. Best body text is #FFFFFF at 6.60:1 contrast (WCAG AA passes).

Color values

HEX	#3155BF
RGB	rgb(49, 85, 191)
HSL	hsl(225, 59%, 47%)
HSV	hsv(225, 74%, 75%)
CMYK	cmyk(74.3%, 55.5%, 0%, 25.1%)
CIE-LAB	lab(39.43, 24.61, -59.40)
CIE-LCH	lch(39.43, 64.30, 292.51°)
OKLab	oklab(48.69% -0.0121 -0.1712)
OKLCH	oklch(48.69% 0.172 266)
XYZ	xyz(13.9158, 10.9100, 50.6526)
Luminance	0.1091 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3155BF #BF9B31

analogous

#319CBF #3155BF #5431BF

triadic

#3155BF #BF3155 #55BF31

tetradic

#3155BF #BF319C #BF9B31 #31BF54

square

#3155BF #BF319C #BF9B31 #31BF54

split-complementary

#3155BF #BF5431 #9CBF31

monochromatic

#182A5E #253F8E #3155BF #5978D4 #8AA0E1

Accessibility & contrast

On white

6.60

#3155BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.18

#3155BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3155BF

6.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3155BF	#FFFFFF	#000000	##FFFFFF
##3155BF	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)

#0064C3

Deuteranopia (green-blind)

#0057BD

Tritanopia (blue-blind)

#006F81

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #3155bf;
/* rgb */ color: rgb(49, 85, 191);
/* oklch */ color: oklch(48.7% 0.172 266.0);

Tailwind

colors: {
  custom: {
    50: '#7d84d3',
    500: '#3155bf',
    950: '#000000',
  },
}

SCSS

$custom: #3155bf;
$custom-light: #7d84d3;
$custom-dark: #000000;

JSON

{
  "hex": "#3155bf",
  "rgb": {
    "r": 49,
    "g": 85,
    "b": 191
  },
  "hsl": {
    "h": 224.789,
    "s": 59.167,
    "l": 47.059
  },
  "oklch": {
    "l": 0.48685,
    "c": 0.17166,
    "h": 266
  },
  "luminance": 0.10912
}

Semantic roles & 50–950 ramp

primary

#3155BF

secondary

#CBB881

accent

#BB45E2

background

#F8F8FD

surface

#EFEFFA

border

#CACAD3

text

#0B0A14

muted

#7C7C83

Preview Lab

Preview with #3155BF

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

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