#3157AC#3157AC

#3157AC is a mid, vivid blue. Relative luminance 0.104; OKLCH L 47.7% C 0.143 H 263.7°. Best body text is #FFFFFF at 6.80:1 contrast (WCAG AA passes).

Color values

HEX	#3157AC
RGB	rgb(49, 87, 172)
HSL	hsl(221, 56%, 43%)
HSV	hsv(221, 72%, 67%)
CMYK	cmyk(71.5%, 49.4%, 0%, 32.5%)
CIE-LAB	lab(38.63, 16.17, -49.52)
CIE-LCH	lch(38.63, 52.09, 288.08°)
OKLab	oklab(47.65% -0.0156 -0.1421)
OKLCH	oklch(47.65% 0.143 263.7)
XYZ	xyz(12.1186, 10.4467, 40.3995)
Luminance	0.1045 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3157AC #AC8631

analogous

#3194AC #3157AC #4831AC

triadic

#3157AC #AC3157 #57AC31

tetradic

#3157AC #AC3194 #AC8631 #31AC48

square

#3157AC #AC3194 #AC8631 #31AC48

split-complementary

#3157AC #AC4831 #94AC31

monochromatic

#16274D #233F7C #3157AC #4E75CC #7D9ADA

Accessibility & contrast

On white

6.80

#3157AC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.09

#3157AC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3157AC

6.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3157AC	#FFFFFF	#000000	##FFFFFF
##3157AC	1.00	6.80	3.09	6.80
#FFFFFF	6.80	1.00	21.00	1.00
#000000	3.09	21.00	1.00	21.00
##FFFFFF	6.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2761AF

Deuteranopia (green-blind)

#0056AA

Tritanopia (blue-blind)

#006B79

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #3157ac;
/* rgb */ color: rgb(49, 87, 172);
/* oklch */ color: oklch(47.7% 0.143 263.7);

Tailwind

colors: {
  custom: {
    50: '#7985c5',
    500: '#3157ac',
    950: '#000000',
  },
}

SCSS

$custom: #3157ac;
$custom-light: #7985c5;
$custom-dark: #000000;

JSON

{
  "hex": "#3157ac",
  "rgb": {
    "r": 49,
    "g": 87,
    "b": 172
  },
  "hsl": {
    "h": 221.463,
    "s": 55.656,
    "l": 43.333
  },
  "oklch": {
    "l": 0.47654,
    "c": 0.14298,
    "h": 263.7
  },
  "luminance": 0.10448
}

Semantic roles & 50–950 ramp

primary

#3157AC

secondary

#C3AB76

accent

#B149DF

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #3157AC

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

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