#3157B4#3157B4

#3157B4 is a mid, vivid blue. Relative luminance 0.108; OKLCH L 48.2% C 0.154 H 264.6°. Best body text is #FFFFFF at 6.66:1 contrast (WCAG AA passes).

Color values

HEX	#3157B4
RGB	rgb(49, 87, 180)
HSL	hsl(223, 57%, 45%)
HSV	hsv(223, 73%, 71%)
CMYK	cmyk(72.8%, 51.7%, 0%, 29.4%)
CIE-LAB	lab(39.18, 19.18, -53.36)
CIE-LCH	lch(39.18, 56.70, 289.77°)
OKLab	oklab(48.25% -0.0146 -0.1534)
OKLCH	oklch(48.25% 0.154 264.6)
XYZ	xyz(12.9101, 10.7633, 44.5683)
Luminance	0.1076 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3157B4 #B48E31

analogous

#3199B4 #3157B4 #4C31B4

triadic

#3157B4 #B43157 #57B431

tetradic

#3157B4 #B43199 #B48E31 #31B44C

square

#3157B4 #B43199 #B48E31 #31B44C

split-complementary

#3157B4 #B44C31 #99B431

monochromatic

#172854 #244084 #3157B4 #5277D0 #829DDD

Accessibility & contrast

On white

6.66

#3157B4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#3157B4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3157B4

6.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3157B4	#FFFFFF	#000000	##FFFFFF
##3157B4	1.00	6.66	3.15	6.66
#FFFFFF	6.66	1.00	21.00	1.00
#000000	3.15	21.00	1.00	21.00
##FFFFFF	6.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C63B7

Deuteranopia (green-blind)

#0057B2

Tritanopia (blue-blind)

#006D7D

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3157b4;
/* rgb */ color: rgb(49, 87, 180);
/* oklch */ color: oklch(48.2% 0.154 264.6);

Tailwind

colors: {
  custom: {
    50: '#7a85cb',
    500: '#3157b4',
    950: '#000000',
  },
}

SCSS

$custom: #3157b4;
$custom-light: #7a85cb;
$custom-dark: #000000;

JSON

{
  "hex": "#3157b4",
  "rgb": {
    "r": 49,
    "g": 87,
    "b": 180
  },
  "hsl": {
    "h": 222.595,
    "s": 57.205,
    "l": 44.902
  },
  "oklch": {
    "l": 0.48245,
    "c": 0.15413,
    "h": 264.6
  },
  "luminance": 0.10765
}

Semantic roles & 50–950 ramp

primary

#3157B4

secondary

#C6B07B

accent

#B447E0

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #3157B4

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

Preview Lab → · Contrast checker → · Palette generator →