#3151B6#3151B6

#3151B6 is a mid, vivid blue. Relative luminance 0.099; OKLCH L 47.2% C 0.164 H 266.7°. Best body text is #FFFFFF at 7.04:1 contrast (WCAG AA passes).

Color values

HEX	#3151B6
RGB	rgb(49, 81, 182)
HSL	hsl(226, 58%, 45%)
HSV	hsv(226, 73%, 71%)
CMYK	cmyk(73.1%, 55.5%, 0%, 28.6%)
CIE-LAB	lab(37.69, 23.87, -56.95)
CIE-LCH	lch(37.69, 61.75, 292.74°)
OKLab	oklab(47.16% -0.0096 -0.1641)
OKLCH	oklch(47.16% 0.164 266.7)
XYZ	xyz(12.6496, 9.9139, 45.4938)
Luminance	0.0992 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3151B6 #B69631

analogous

#3193B6 #3151B6 #5331B6

triadic

#3151B6 #B63151 #51B631

tetradic

#3151B6 #B63193 #B69631 #31B653

square

#3151B6 #B63193 #B69631 #31B653

split-complementary

#3151B6 #B65331 #93B631

monochromatic

#172656 #243C86 #3151B6 #5372D1 #8499DE

Accessibility & contrast

On white

7.04

#3151B6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.98

#3151B6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3151B6

7.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3151B6	#FFFFFF	#000000	##FFFFFF
##3151B6	1.00	7.04	2.98	7.04
#FFFFFF	7.04	1.00	21.00	1.00
#000000	2.98	21.00	1.00	21.00
##FFFFFF	7.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FB9

Deuteranopia (green-blind)

#0053B4

Tritanopia (blue-blind)

#006A7B

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #3151b6;
/* rgb */ color: rgb(49, 81, 182);
/* oklch */ color: oklch(47.2% 0.164 266.7);

Tailwind

colors: {
  custom: {
    50: '#7b81cd',
    500: '#3151b6',
    950: '#000000',
  },
}

SCSS

$custom: #3151b6;
$custom-light: #7b81cd;
$custom-dark: #000000;

JSON

{
  "hex": "#3151b6",
  "rgb": {
    "r": 49,
    "g": 81,
    "b": 182
  },
  "hsl": {
    "h": 225.564,
    "s": 57.576,
    "l": 45.294
  },
  "oklch": {
    "l": 0.47162,
    "c": 0.16438,
    "h": 266.7
  },
  "luminance": 0.09915
}

Semantic roles & 50–950 ramp

primary

#3151B6

secondary

#C7B57C

accent

#BC47E1

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #3151B6

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

Preview Lab → · Contrast checker → · Palette generator →