#3017B4#3017B4

#3017B4 is a dark, highly saturated blue. Relative luminance 0.045; OKLCH L 38.2% C 0.221 H 275.3°. Best body text is #FFFFFF at 11.01:1 contrast (WCAG AA passes).

Color values

HEX	#3017B4
RGB	rgb(48, 23, 180)
HSL	hsl(250, 77%, 40%)
HSV	hsv(250, 87%, 71%)
CMYK	cmyk(73.3%, 87.2%, 0%, 29.4%)
CIE-LAB	lab(25.37, 55.83, -76.01)
CIE-LCH	lch(25.37, 94.32, 306.30°)
OKLab	oklab(38.2% 0.0205 -0.2196)
OKLCH	oklch(38.2% 0.221 275.3)
XYZ	xyz(9.7608, 4.5355, 43.5322)
Luminance	0.0454 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3017B4 #9BB417

analogous

#174DB4 #3017B4 #7E17B4

triadic

#3017B4 #B43017 #17B430

tetradic

#3017B4 #B4174D #9BB417 #17B47E

square

#3017B4 #B4174D #9BB417 #17B47E

split-complementary

#3017B4 #B47E17 #4DB417

monochromatic

#130947 #22107E #3017B4 #4325E3 #725BEA

Accessibility & contrast

On white

11.01

#3017B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#3017B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3017B4

11.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3017B4	#FFFFFF	#000000	##FFFFFF
##3017B4	1.00	11.01	1.91	11.01
#FFFFFF	11.01	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	11.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0043B8

Deuteranopia (green-blind)

#0035B1

Tritanopia (blue-blind)

#004C6A

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #3017b4;
/* rgb */ color: rgb(48, 23, 180);
/* oklch */ color: oklch(38.2% 0.221 275.3);

Tailwind

colors: {
  custom: {
    50: '#7f5ccc',
    500: '#3017b4',
    950: '#000000',
  },
}

SCSS

$custom: #3017b4;
$custom-light: #7f5ccc;
$custom-dark: #000000;

JSON

{
  "hex": "#3017b4",
  "rgb": {
    "r": 48,
    "g": 23,
    "b": 180
  },
  "hsl": {
    "h": 249.554,
    "s": 77.34,
    "l": 39.804
  },
  "oklch": {
    "l": 0.38203,
    "c": 0.22058,
    "h": 275.3
  },
  "luminance": 0.04536
}

Semantic roles & 50–950 ramp

primary

#3017B4

secondary

#BBCE59

accent

#F434D5

background

#F8F5FC

surface

#F0E9F9

border

#CBC5D2

text

#0C0514

muted

#7D7982

Preview Lab

Preview with #3017B4

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

Preview Lab → · Contrast checker → · Palette generator →