#3157A9#3157A9

#3157A9 is a mid, vivid blue. Relative luminance 0.103; OKLCH L 47.4% C 0.139 H 263.4°. Best body text is #FFFFFF at 6.85:1 contrast (WCAG AA passes).

Color values

HEX	#3157A9
RGB	rgb(49, 87, 169)
HSL	hsl(221, 55%, 43%)
HSV	hsv(221, 71%, 66%)
CMYK	cmyk(71%, 48.5%, 0%, 33.7%)
CIE-LAB	lab(38.43, 15.04, -48.06)
CIE-LCH	lch(38.43, 50.36, 287.38°)
OKLab	oklab(47.44% -0.016 -0.1378)
OKLCH	oklch(47.44% 0.139 263.4)
XYZ	xyz(11.8337, 10.3327, 38.8992)
Luminance	0.1033 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3157A9 #A98331

analogous

#3193A9 #3157A9 #4731A9

triadic

#3157A9 #A93157 #57A931

tetradic

#3157A9 #A93193 #A98331 #31A947

square

#3157A9 #A93193 #A98331 #31A947

split-complementary

#3157A9 #A94731 #93A931

monochromatic

#15264A #233F7A #3157A9 #4C74CB #7C99D9

Accessibility & contrast

On white

6.85

#3157A9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.07

#3157A9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3157A9

6.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3157A9	#FFFFFF	#000000	##FFFFFF
##3157A9	1.00	6.85	3.07	6.85
#FFFFFF	6.85	1.00	21.00	1.00
#000000	3.07	21.00	1.00	21.00
##FFFFFF	6.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B60AC

Deuteranopia (green-blind)

#0955A7

Tritanopia (blue-blind)

#006A78

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #3157a9;
/* rgb */ color: rgb(49, 87, 169);
/* oklch */ color: oklch(47.4% 0.139 263.4);

Tailwind

colors: {
  custom: {
    50: '#7885c3',
    500: '#3157a9',
    950: '#000000',
  },
}

SCSS

$custom: #3157a9;
$custom-light: #7885c3;
$custom-dark: #000000;

JSON

{
  "hex": "#3157a9",
  "rgb": {
    "r": 49,
    "g": 87,
    "b": 169
  },
  "hsl": {
    "h": 221,
    "s": 55.046,
    "l": 42.745
  },
  "oklch": {
    "l": 0.47438,
    "c": 0.13877,
    "h": 263.4
  },
  "luminance": 0.10334
}

Semantic roles & 50–950 ramp

primary

#3157A9

secondary

#C1A974

accent

#AF49DE

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0B12

muted

#7C7C81

Preview Lab

Preview with #3157A9

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

Preview Lab → · Contrast checker → · Palette generator →