#2317B3#2317B3

#2317B3 is a dark, highly saturated blue. Relative luminance 0.042; OKLCH L 37.3% C 0.223 H 271.0°. Best body text is #FFFFFF at 11.38:1 contrast (WCAG AA passes).

Color values

HEX	#2317B3
RGB	rgb(35, 23, 179)
HSL	hsl(245, 77%, 40%)
HSV	hsv(245, 87%, 70%)
CMYK	cmyk(80.4%, 87.2%, 0%, 29.8%)
CIE-LAB	lab(24.40, 54.89, -77.05)
CIE-LCH	lch(24.40, 94.61, 305.46°)
OKLab	oklab(37.28% 0.0038 -0.2228)
OKLCH	oklch(37.28% 0.223 271)
XYZ	xyz(9.1335, 4.2237, 42.9730)
Luminance	0.0423 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2317B3 #A7B317

analogous

#1759B3 #2317B3 #7117B3

triadic

#2317B3 #B32317 #17B323

tetradic

#2317B3 #B31759 #A7B317 #17B371

square

#2317B3 #B31759 #A7B317 #17B371

split-complementary

#2317B3 #B37117 #59B317

monochromatic

#0E0947 #18107D #2317B3 #3324E3 #665BEA

Accessibility & contrast

On white

11.38

#2317B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#2317B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2317B3

11.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2317B3	#FFFFFF	#000000	##FFFFFF
##2317B3	1.00	11.38	1.85	11.38
#FFFFFF	11.38	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0041B7

Deuteranopia (green-blind)

#0032B1

Tritanopia (blue-blind)

#004C6A

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #2317b3;
/* rgb */ color: rgb(35, 23, 179);
/* oklch */ color: oklch(37.3% 0.223 271.0);

Tailwind

colors: {
  custom: {
    50: '#7b5bcb',
    500: '#2317b3',
    950: '#000000',
  },
}

SCSS

$custom: #2317b3;
$custom-light: #7b5bcb;
$custom-dark: #000000;

JSON

{
  "hex": "#2317b3",
  "rgb": {
    "r": 35,
    "g": 23,
    "b": 179
  },
  "hsl": {
    "h": 244.615,
    "s": 77.228,
    "l": 39.608
  },
  "oklch": {
    "l": 0.37282,
    "c": 0.22288,
    "h": 271
  },
  "luminance": 0.04225
}

Semantic roles & 50–950 ramp

primary

#2317B3

secondary

#C4CD58

accent

#F434E5

background

#F8F5FC

surface

#F0E9F9

border

#CBC5D2

text

#0B0414

muted

#7C7982

Preview Lab

Preview with #2317B3

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

Preview Lab → · Contrast checker → · Palette generator →