#2517B4#2517B4

#2517B4 is a dark, highly saturated blue. Relative luminance 0.043; OKLCH L 37.5% C 0.223 H 271.5°. Best body text is #FFFFFF at 11.29:1 contrast (WCAG AA passes).

Color values

HEX	#2517B4
RGB	rgb(37, 23, 180)
HSL	hsl(245, 77%, 40%)
HSV	hsv(245, 87%, 71%)
CMYK	cmyk(79.4%, 87.2%, 0%, 29.4%)
CIE-LAB	lab(24.64, 55.27, -77.24)
CIE-LCH	lch(24.64, 94.98, 305.58°)
OKLab	oklab(37.52% 0.0059 -0.2234)
OKLCH	oklch(37.52% 0.223 271.5)
XYZ	xyz(9.3048, 4.3003, 43.5108)
Luminance	0.0430 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2517B4 #A6B417

analogous

#1758B4 #2517B4 #7317B4

triadic

#2517B4 #B42517 #17B425

tetradic

#2517B4 #B41758 #A6B417 #17B473

square

#2517B4 #B41758 #A6B417 #17B473

split-complementary

#2517B4 #B47317 #58B417

monochromatic

#0F0947 #1A107E #2517B4 #3625E3 #685BEA

Accessibility & contrast

On white

11.29

#2517B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#2517B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2517B4

11.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2517B4	#FFFFFF	#000000	##FFFFFF
##2517B4	1.00	11.29	1.86	11.29
#FFFFFF	11.29	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0042B8

Deuteranopia (green-blind)

#0033B1

Tritanopia (blue-blind)

#004D6A

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #2517b4;
/* rgb */ color: rgb(37, 23, 180);
/* oklch */ color: oklch(37.5% 0.223 271.5);

Tailwind

colors: {
  custom: {
    50: '#7b5ccc',
    500: '#2517b4',
    950: '#000000',
  },
}

SCSS

$custom: #2517b4;
$custom-light: #7b5ccc;
$custom-dark: #000000;

JSON

{
  "hex": "#2517b4",
  "rgb": {
    "r": 37,
    "g": 23,
    "b": 180
  },
  "hsl": {
    "h": 245.35,
    "s": 77.34,
    "l": 39.804
  },
  "oklch": {
    "l": 0.37515,
    "c": 0.22345,
    "h": 271.5
  },
  "luminance": 0.04301
}

Semantic roles & 50–950 ramp

primary

#2517B4

secondary

#C3CE59

accent

#F434E3

background

#F8F5FC

surface

#F0E9F9

border

#CBC5D2

text

#0C0414

muted

#7D7982

Preview Lab

Preview with #2517B4

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

Preview Lab → · Contrast checker → · Palette generator →