#3157B7#3157B7

#3157B7 is a mid, vivid blue. Relative luminance 0.109; OKLCH L 48.5% C 0.158 H 264.8°. Best body text is #FFFFFF at 6.61:1 contrast (WCAG AA passes).

Color values

HEX	#3157B7
RGB	rgb(49, 87, 183)
HSL	hsl(223, 58%, 45%)
HSV	hsv(223, 73%, 72%)
CMYK	cmyk(73.2%, 52.5%, 0%, 28.2%)
CIE-LAB	lab(39.39, 20.31, -54.78)
CIE-LCH	lch(39.39, 58.43, 290.34°)
OKLab	oklab(48.47% -0.0143 -0.1576)
OKLCH	oklch(48.47% 0.158 264.8)
XYZ	xyz(13.2190, 10.8868, 46.1953)
Luminance	0.1089 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3157B7 #B79131

analogous

#319AB7 #3157B7 #4E31B7

triadic

#3157B7 #B73157 #57B731

tetradic

#3157B7 #B7319A #B79131 #31B74E

square

#3157B7 #B7319A #B79131 #31B74E

split-complementary

#3157B7 #B74E31 #9AB731

monochromatic

#172956 #244087 #3157B7 #5477D1 #849EDE

Accessibility & contrast

On white

6.61

#3157B7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.18

#3157B7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3157B7

6.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3157B7	#FFFFFF	#000000	##FFFFFF
##3157B7	1.00	6.61	3.18	6.61
#FFFFFF	6.61	1.00	21.00	1.00
#000000	3.18	21.00	1.00	21.00
##FFFFFF	6.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1663BA

Deuteranopia (green-blind)

#0057B5

Tritanopia (blue-blind)

#006E7E

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #3157b7;
/* rgb */ color: rgb(49, 87, 183);
/* oklch */ color: oklch(48.5% 0.158 264.8);

Tailwind

colors: {
  custom: {
    50: '#7b85cd',
    500: '#3157b7',
    950: '#000000',
  },
}

SCSS

$custom: #3157b7;
$custom-light: #7b85cd;
$custom-dark: #000000;

JSON

{
  "hex": "#3157b7",
  "rgb": {
    "r": 49,
    "g": 87,
    "b": 183
  },
  "hsl": {
    "h": 222.985,
    "s": 57.759,
    "l": 45.49
  },
  "oklch": {
    "l": 0.48472,
    "c": 0.15827,
    "h": 264.8
  },
  "luminance": 0.10888
}

Semantic roles & 50–950 ramp

primary

#3157B7

secondary

#C8B27C

accent

#B547E1

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #3157B7

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

Preview Lab → · Contrast checker → · Palette generator →