#3145B1#3145B1

#3145B1 is a dark, vivid blue. Relative luminance 0.081; OKLCH L 44.4% C 0.172 H 269.8°. Best body text is #FFFFFF at 8.03:1 contrast (WCAG AA passes).

Color values

HEX	#3145B1
RGB	rgb(49, 69, 177)
HSL	hsl(231, 57%, 44%)
HSV	hsv(231, 72%, 69%)
CMYK	cmyk(72.3%, 61%, 0%, 30.6%)
CIE-LAB	lab(34.15, 29.88, -59.75)
CIE-LCH	lch(34.15, 66.80, 296.57°)
OKLab	oklab(44.4% -0.0005 -0.1725)
OKLCH	oklch(44.4% 0.172 269.8)
XYZ	xyz(11.3278, 8.0824, 42.5495)
Luminance	0.0808 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3145B1 #B19D31

analogous

#3185B1 #3145B1 #5D31B1

triadic

#3145B1 #B13145 #45B131

tetradic

#3145B1 #B13185 #B19D31 #31B15D

square

#3145B1 #B13185 #B19D31 #31B15D

split-complementary

#3145B1 #B15D31 #85B131

monochromatic

#162051 #243281 #3145B1 #5164CF #808FDC

Accessibility & contrast

On white

8.03

#3145B1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.62

#3145B1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3145B1

8.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3145B1	#FFFFFF	#000000	##FFFFFF
##3145B1	1.00	8.03	2.62	8.03
#FFFFFF	8.03	1.00	21.00	1.00
#000000	2.62	21.00	1.00	21.00
##FFFFFF	8.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056B5

Deuteranopia (green-blind)

#004BAF

Tritanopia (blue-blind)

#006074

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #3145b1;
/* rgb */ color: rgb(49, 69, 177);
/* oklch */ color: oklch(44.4% 0.172 269.8);

Tailwind

colors: {
  custom: {
    50: '#7b78c9',
    500: '#3145b1',
    950: '#000000',
  },
}

SCSS

$custom: #3145b1;
$custom-light: #7b78c9;
$custom-dark: #000000;

JSON

{
  "hex": "#3145b1",
  "rgb": {
    "r": 49,
    "g": 69,
    "b": 177
  },
  "hsl": {
    "h": 230.625,
    "s": 56.637,
    "l": 44.314
  },
  "oklch": {
    "l": 0.44399,
    "c": 0.17247,
    "h": 269.8
  },
  "luminance": 0.08084
}

Semantic roles & 50–950 ramp

primary

#3145B1

secondary

#C5B979

accent

#C848E0

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #3145B1

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

Preview Lab → · Contrast checker → · Palette generator →