#3157B3#3157B3

#3157B3 is a mid, vivid blue. Relative luminance 0.107; OKLCH L 48.2% C 0.153 H 264.5°. Best body text is #FFFFFF at 6.68:1 contrast (WCAG AA passes).

Color values

HEX	#3157B3
RGB	rgb(49, 87, 179)
HSL	hsl(222, 57%, 45%)
HSV	hsv(222, 73%, 70%)
CMYK	cmyk(72.6%, 51.4%, 0%, 29.8%)
CIE-LAB	lab(39.11, 18.80, -52.88)
CIE-LCH	lch(39.11, 56.13, 289.57°)
OKLab	oklab(48.17% -0.0147 -0.152)
OKLCH	oklch(48.17% 0.153 264.5)
XYZ	xyz(12.8086, 10.7227, 44.0337)
Luminance	0.1072 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3157B3 #B38D31

analogous

#3198B3 #3157B3 #4C31B3

triadic

#3157B3 #B33157 #57B331

tetradic

#3157B3 #B33198 #B38D31 #31B34C

square

#3157B3 #B33198 #B38D31 #31B34C

split-complementary

#3157B3 #B34C31 #98B331

monochromatic

#172853 #244083 #3157B3 #5276D0 #829CDD

Accessibility & contrast

On white

6.68

#3157B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.14

#3157B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3157B3

6.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3157B3	#FFFFFF	#000000	##FFFFFF
##3157B3	1.00	6.68	3.14	6.68
#FFFFFF	6.68	1.00	21.00	1.00
#000000	3.14	21.00	1.00	21.00
##FFFFFF	6.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E62B6

Deuteranopia (green-blind)

#0056B1

Tritanopia (blue-blind)

#006D7C

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3157b3;
/* rgb */ color: rgb(49, 87, 179);
/* oklch */ color: oklch(48.2% 0.153 264.5);

Tailwind

colors: {
  custom: {
    50: '#7a85ca',
    500: '#3157b3',
    950: '#000000',
  },
}

SCSS

$custom: #3157b3;
$custom-light: #7a85ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3157b3",
  "rgb": {
    "r": 49,
    "g": 87,
    "b": 179
  },
  "hsl": {
    "h": 222.462,
    "s": 57.018,
    "l": 44.706
  },
  "oklch": {
    "l": 0.4817,
    "c": 0.15274,
    "h": 264.5
  },
  "luminance": 0.10724
}

Semantic roles & 50–950 ramp

primary

#3157B3

secondary

#C6B07A

accent

#B448E0

background

#F8F8FC

surface

#EFEFF8

border

#CACAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #3157B3

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

Preview Lab → · Contrast checker → · Palette generator →