#3157AA#3157AA

#3157AA is a mid, vivid blue. Relative luminance 0.104; OKLCH L 47.5% C 0.140 H 263.5°. Best body text is #FFFFFF at 6.83:1 contrast (WCAG AA passes).

Color values

HEX	#3157AA
RGB	rgb(49, 87, 170)
HSL	hsl(221, 55%, 43%)
HSV	hsv(221, 71%, 67%)
CMYK	cmyk(71.2%, 48.8%, 0%, 33.3%)
CIE-LAB	lab(38.50, 15.42, -48.55)
CIE-LCH	lch(38.50, 50.94, 287.62°)
OKLab	oklab(47.51% -0.0159 -0.1393)
OKLCH	oklch(47.51% 0.14 263.5)
XYZ	xyz(11.9279, 10.3704, 39.3955)
Luminance	0.1037 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3157AA #AA8431

analogous

#3193AA #3157AA #4731AA

triadic

#3157AA #AA3157 #57AA31

tetradic

#3157AA #AA3193 #AA8431 #31AA47

square

#3157AA #AA3193 #AA8431 #31AA47

split-complementary

#3157AA #AA4731 #93AA31

monochromatic

#16264B #233F7A #3157AA #4D74CC #7C99D9

Accessibility & contrast

On white

6.83

#3157AA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.07

#3157AA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3157AA

6.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3157AA	#FFFFFF	#000000	##FFFFFF
##3157AA	1.00	6.83	3.07	6.83
#FFFFFF	6.83	1.00	21.00	1.00
#000000	3.07	21.00	1.00	21.00
##FFFFFF	6.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2961AD

Deuteranopia (green-blind)

#0655A8

Tritanopia (blue-blind)

#006B78

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #3157aa;
/* rgb */ color: rgb(49, 87, 170);
/* oklch */ color: oklch(47.5% 0.140 263.5);

Tailwind

colors: {
  custom: {
    50: '#7885c4',
    500: '#3157aa',
    950: '#000000',
  },
}

SCSS

$custom: #3157aa;
$custom-light: #7885c4;
$custom-dark: #000000;

JSON

{
  "hex": "#3157aa",
  "rgb": {
    "r": 49,
    "g": 87,
    "b": 170
  },
  "hsl": {
    "h": 221.157,
    "s": 55.251,
    "l": 42.941
  },
  "oklch": {
    "l": 0.4751,
    "c": 0.14017,
    "h": 263.5
  },
  "luminance": 0.10372
}

Semantic roles & 50–950 ramp

primary

#3157AA

secondary

#C2AA75

accent

#B049DF

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #3157AA

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

Preview Lab → · Contrast checker → · Palette generator →