#2517B3#2517B3

#2517B3 is a dark, highly saturated blue. Relative luminance 0.043; OKLCH L 37.4% C 0.222 H 271.6°. Best body text is #FFFFFF at 11.34:1 contrast (WCAG AA passes).

Color values

HEX	#2517B3
RGB	rgb(37, 23, 179)
HSL	hsl(245, 77%, 40%)
HSV	hsv(245, 87%, 70%)
CMYK	cmyk(79.3%, 87.2%, 0%, 29.8%)
CIE-LAB	lab(24.51, 54.98, -76.86)
CIE-LCH	lch(24.51, 94.50, 305.58°)
OKLab	oklab(37.39% 0.0062 -0.2223)
OKLCH	oklch(37.39% 0.222 271.6)
XYZ	xyz(9.2033, 4.2597, 42.9763)
Luminance	0.0426 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2517B3 #A5B317

analogous

#1757B3 #2517B3 #7317B3

triadic

#2517B3 #B32517 #17B325

tetradic

#2517B3 #B31757 #A5B317 #17B373

square

#2517B3 #B31757 #A5B317 #17B373

split-complementary

#2517B3 #B37317 #57B317

monochromatic

#0F0947 #1A107D #2517B3 #3524E3 #675BEA

Accessibility & contrast

On white

11.34

#2517B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#2517B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2517B3

11.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2517B3	#FFFFFF	#000000	##FFFFFF
##2517B3	1.00	11.34	1.85	11.34
#FFFFFF	11.34	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.34	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: #2517b3;
/* rgb */ color: rgb(37, 23, 179);
/* oklch */ color: oklch(37.4% 0.222 271.6);

Tailwind

colors: {
  custom: {
    50: '#7b5ccb',
    500: '#2517b3',
    950: '#000000',
  },
}

SCSS

$custom: #2517b3;
$custom-light: #7b5ccb;
$custom-dark: #000000;

JSON

{
  "hex": "#2517b3",
  "rgb": {
    "r": 37,
    "g": 23,
    "b": 179
  },
  "hsl": {
    "h": 245.385,
    "s": 77.228,
    "l": 39.608
  },
  "oklch": {
    "l": 0.37391,
    "c": 0.22235,
    "h": 271.6
  },
  "luminance": 0.04261
}

Semantic roles & 50–950 ramp

primary

#2517B3

secondary

#C3CD58

accent

#F434E3

background

#F8F5FC

surface

#F0E9F9

border

#CBC5D2

text

#0B0414

muted

#7C7982

Preview Lab

Preview with #2517B3

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

Preview Lab → · Contrast checker → · Palette generator →