#3157B5#3157B5

#3157B5 is a mid, vivid blue. Relative luminance 0.108; OKLCH L 48.3% C 0.156 H 264.6°. Best body text is #FFFFFF at 6.64:1 contrast (WCAG AA passes).

Color values

HEX	#3157B5
RGB	rgb(49, 87, 181)
HSL	hsl(223, 57%, 45%)
HSV	hsv(223, 73%, 71%)
CMYK	cmyk(72.9%, 51.9%, 0%, 29%)
CIE-LAB	lab(39.25, 19.56, -53.84)
CIE-LCH	lch(39.25, 57.28, 289.96°)
OKLab	oklab(48.32% -0.0145 -0.1548)
OKLCH	oklch(48.32% 0.156 264.6)
XYZ	xyz(13.0124, 10.8042, 45.1067)
Luminance	0.1081 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3157B5 #B58F31

analogous

#3199B5 #3157B5 #4D31B5

triadic

#3157B5 #B53157 #57B531

tetradic

#3157B5 #B53199 #B58F31 #31B54D

square

#3157B5 #B53199 #B58F31 #31B54D

split-complementary

#3157B5 #B54D31 #99B531

monochromatic

#172955 #244085 #3157B5 #5377D0 #839DDD

Accessibility & contrast

On white

6.64

#3157B5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.16

#3157B5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3157B5

6.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3157B5	#FFFFFF	#000000	##FFFFFF
##3157B5	1.00	6.64	3.16	6.64
#FFFFFF	6.64	1.00	21.00	1.00
#000000	3.16	21.00	1.00	21.00
##FFFFFF	6.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A63B8

Deuteranopia (green-blind)

#0057B3

Tritanopia (blue-blind)

#006E7D

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3157b5;
/* rgb */ color: rgb(49, 87, 181);
/* oklch */ color: oklch(48.3% 0.156 264.6);

Tailwind

colors: {
  custom: {
    50: '#7b85cc',
    500: '#3157b5',
    950: '#000000',
  },
}

SCSS

$custom: #3157b5;
$custom-light: #7b85cc;
$custom-dark: #000000;

JSON

{
  "hex": "#3157b5",
  "rgb": {
    "r": 49,
    "g": 87,
    "b": 181
  },
  "hsl": {
    "h": 222.727,
    "s": 57.391,
    "l": 45.098
  },
  "oklch": {
    "l": 0.4832,
    "c": 0.15551,
    "h": 264.6
  },
  "luminance": 0.10806
}

Semantic roles & 50–950 ramp

primary

#3157B5

secondary

#C7B17B

accent

#B447E1

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #3157B5

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

Preview Lab → · Contrast checker → · Palette generator →