#3151A0#3151A0

#3151A0 is a mid, vivid blue. Relative luminance 0.091; OKLCH L 45.5% C 0.134 H 265.0°. Best body text is #FFFFFF at 7.46:1 contrast (WCAG AA passes).

Color values

HEX	#3151A0
RGB	rgb(49, 81, 160)
HSL	hsl(223, 53%, 41%)
HSV	hsv(223, 69%, 63%)
CMYK	cmyk(69.4%, 49.4%, 0%, 37.3%)
CIE-LAB	lab(36.13, 15.62, -46.40)
CIE-LCH	lch(36.13, 48.96, 288.60°)
OKLab	oklab(45.49% -0.0117 -0.133)
OKLCH	oklch(45.49% 0.134 265)
XYZ	xyz(10.5520, 9.0748, 34.4464)
Luminance	0.0908 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3151A0 #A08031

analogous

#3188A0 #3151A0 #4831A0

triadic

#3151A0 #A03151 #51A031

tetradic

#3151A0 #A03188 #A08031 #31A048

square

#3151A0 #A03188 #A08031 #31A048

split-complementary

#3151A0 #A04831 #88A031

monochromatic

#142242 #233971 #3151A0 #476CC7 #7692D5

Accessibility & contrast

On white

7.46

#3151A0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.82

#3151A0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3151A0

7.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3151A0	#FFFFFF	#000000	##FFFFFF
##3151A0	1.00	7.46	2.82	7.46
#FFFFFF	7.46	1.00	21.00	1.00
#000000	2.82	21.00	1.00	21.00
##FFFFFF	7.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#265AA3

Deuteranopia (green-blind)

#06509E

Tritanopia (blue-blind)

#006371

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #3151a0;
/* rgb */ color: rgb(49, 81, 160);
/* oklch */ color: oklch(45.5% 0.134 265.0);

Tailwind

colors: {
  custom: {
    50: '#7681bd',
    500: '#3151a0',
    950: '#000000',
  },
}

SCSS

$custom: #3151a0;
$custom-light: #7681bd;
$custom-dark: #000000;

JSON

{
  "hex": "#3151a0",
  "rgb": {
    "r": 49,
    "g": 81,
    "b": 160
  },
  "hsl": {
    "h": 222.703,
    "s": 53.11,
    "l": 40.98
  },
  "oklch": {
    "l": 0.45485,
    "c": 0.13357,
    "h": 265
  },
  "luminance": 0.09076
}

Semantic roles & 50–950 ramp

primary

#3151A0

secondary

#BDA770

accent

#B34BDD

background

#F7F7FB

surface

#EEEEF6

border

#C9C9D0

text

#0A0A12

muted

#7C7C81

Preview Lab

Preview with #3151A0

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

Preview Lab → · Contrast checker → · Palette generator →