#2317B4#2317B4

#2317B4 is a dark, highly saturated blue. Relative luminance 0.043; OKLCH L 37.4% C 0.224 H 270.9°. Best body text is #FFFFFF at 11.33:1 contrast (WCAG AA passes).

Color values

HEX	#2317B4
RGB	rgb(35, 23, 180)
HSL	hsl(245, 77%, 40%)
HSV	hsv(245, 87%, 71%)
CMYK	cmyk(80.6%, 87.2%, 0%, 29.4%)
CIE-LAB	lab(24.53, 55.18, -77.44)
CIE-LCH	lch(24.53, 95.08, 305.47°)
OKLab	oklab(37.41% 0.0035 -0.224)
OKLCH	oklch(37.41% 0.224 270.9)
XYZ	xyz(9.2350, 4.2643, 43.5075)
Luminance	0.0427 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2317B4 #A8B417

analogous

#175AB4 #2317B4 #7217B4

triadic

#2317B4 #B42317 #17B423

tetradic

#2317B4 #B4175A #A8B417 #17B472

square

#2317B4 #B4175A #A8B417 #17B472

split-complementary

#2317B4 #B47217 #5AB417

monochromatic

#0E0947 #18107E #2317B4 #3425E3 #665BEA

Accessibility & contrast

On white

11.33

#2317B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#2317B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2317B4

11.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2317B4	#FFFFFF	#000000	##FFFFFF
##2317B4	1.00	11.33	1.85	11.33
#FFFFFF	11.33	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0042B8

Deuteranopia (green-blind)

#0032B1

Tritanopia (blue-blind)

#004D6A

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #2317b4;
/* rgb */ color: rgb(35, 23, 180);
/* oklch */ color: oklch(37.4% 0.224 270.9);

Tailwind

colors: {
  custom: {
    50: '#7b5ccc',
    500: '#2317b4',
    950: '#000000',
  },
}

SCSS

$custom: #2317b4;
$custom-light: #7b5ccc;
$custom-dark: #000000;

JSON

{
  "hex": "#2317b4",
  "rgb": {
    "r": 35,
    "g": 23,
    "b": 180
  },
  "hsl": {
    "h": 244.586,
    "s": 77.34,
    "l": 39.804
  },
  "oklch": {
    "l": 0.37407,
    "c": 0.22399,
    "h": 270.9
  },
  "luminance": 0.04265
}

Semantic roles & 50–950 ramp

primary

#2317B4

secondary

#C5CE59

accent

#F434E5

background

#F8F5FC

surface

#F0E9F9

border

#CBC5D2

text

#0B0414

muted

#7C7982

Preview Lab

Preview with #2317B4

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

Preview Lab → · Contrast checker → · Palette generator →