#3151B9#3151B9

#3151B9 is a mid, vivid blue. Relative luminance 0.100; OKLCH L 47.4% C 0.168 H 266.8°. Best body text is #FFFFFF at 6.98:1 contrast (WCAG AA passes).

Color values

HEX	#3151B9
RGB	rgb(49, 81, 185)
HSL	hsl(226, 58%, 46%)
HSV	hsv(226, 74%, 73%)
CMYK	cmyk(73.5%, 56.2%, 0%, 27.5%)
CIE-LAB	lab(37.91, 24.99, -58.35)
CIE-LCH	lch(37.91, 63.48, 293.18°)
OKLab	oklab(47.4% -0.0094 -0.1682)
OKLCH	oklch(47.4% 0.168 266.8)
XYZ	xyz(12.9630, 10.0392, 47.1441)
Luminance	0.1004 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3151B9 #B99931

analogous

#3195B9 #3151B9 #5531B9

triadic

#3151B9 #B93151 #51B931

tetradic

#3151B9 #B93195 #B99931 #31B955

square

#3151B9 #B93195 #B99931 #31B955

split-complementary

#3151B9 #B95531 #95B931

monochromatic

#172758 #243C89 #3151B9 #5573D2 #869BDF

Accessibility & contrast

On white

6.98

#3151B9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.01

#3151B9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3151B9

6.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3151B9	#FFFFFF	#000000	##FFFFFF
##3151B9	1.00	6.98	3.01	6.98
#FFFFFF	6.98	1.00	21.00	1.00
#000000	3.01	21.00	1.00	21.00
##FFFFFF	6.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0060BD

Deuteranopia (green-blind)

#0053B7

Tritanopia (blue-blind)

#006B7D

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #3151b9;
/* rgb */ color: rgb(49, 81, 185);
/* oklch */ color: oklch(47.4% 0.168 266.8);

Tailwind

colors: {
  custom: {
    50: '#7c81cf',
    500: '#3151b9',
    950: '#000000',
  },
}

SCSS

$custom: #3151b9;
$custom-light: #7c81cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3151b9",
  "rgb": {
    "r": 49,
    "g": 81,
    "b": 185
  },
  "hsl": {
    "h": 225.882,
    "s": 58.12,
    "l": 45.882
  },
  "oklch": {
    "l": 0.47403,
    "c": 0.16847,
    "h": 266.8
  },
  "luminance": 0.10041
}

Semantic roles & 50–950 ramp

primary

#3151B9

secondary

#C8B77D

accent

#BD46E1

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #3151B9

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

Preview Lab → · Contrast checker → · Palette generator →