#1313B4#1313B4

#1313B4 is a dark, highly saturated blue. Relative luminance 0.039; OKLCH L 36.4% C 0.230 H 267.0°. Best body text is #FFFFFF at 11.80:1 contrast (WCAG AA passes).

Color values

HEX	#1313B4
RGB	rgb(19, 19, 180)
HSL	hsl(240, 81%, 39%)
HSV	hsv(240, 89%, 71%)
CMYK	cmyk(89.4%, 89.4%, 0%, 29.4%)
CIE-LAB	lab(23.33, 56.12, -79.44)
CIE-LCH	lch(23.33, 97.26, 305.24°)
OKLab	oklab(36.39% -0.0121 -0.2298)
OKLCH	oklch(36.39% 0.23 267)
XYZ	xyz(8.7368, 3.8984, 43.4631)
Luminance	0.0390 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1313B4 #B4B413

analogous

#1364B4 #1313B4 #6413B4

triadic

#1313B4 #B41313 #13B413

tetradic

#1313B4 #B41364 #B4B413 #13B464

square

#1313B4 #B41364 #B4B413 #13B464

split-complementary

#1313B4 #B46413 #64B413

monochromatic

#070745 #0D0D7D #1313B4 #1D1DE7 #5454ED

Accessibility & contrast

On white

11.80

#1313B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#1313B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1313B4

11.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1313B4	#FFFFFF	#000000	##FFFFFF
##1313B4	1.00	11.80	1.78	11.80
#FFFFFF	11.80	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0040B8

Deuteranopia (green-blind)

#002EB1

Tritanopia (blue-blind)

#004C6A

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1313b4;
/* rgb */ color: rgb(19, 19, 180);
/* oklch */ color: oklch(36.4% 0.230 267.0);

Tailwind

colors: {
  custom: {
    50: '#7859cc',
    500: '#1313b4',
    950: '#000000',
  },
}

SCSS

$custom: #1313b4;
$custom-light: #7859cc;
$custom-dark: #000000;

JSON

{
  "hex": "#1313b4",
  "rgb": {
    "r": 19,
    "g": 19,
    "b": 180
  },
  "hsl": {
    "h": 240,
    "s": 80.905,
    "l": 39.02
  },
  "oklch": {
    "l": 0.36395,
    "c": 0.23016,
    "h": 267
  },
  "luminance": 0.03899
}

Semantic roles & 50–950 ramp

primary

#1313B4

secondary

#CFCF53

accent

#F730F7

background

#F8F5FC

surface

#EFE9F9

border

#CAC5D2

text

#0B0414

muted

#7C7982

Preview Lab

Preview with #1313B4

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

Preview Lab → · Contrast checker → · Palette generator →