#1F158E#1F158E

#1F158E is a dark, vivid blue. Relative luminance 0.028; OKLCH L 32.3% C 0.183 H 272.8°. Best body text is #FFFFFF at 13.49:1 contrast (WCAG AA passes).

Color values

HEX	#1F158E
RGB	rgb(31, 21, 142)
HSL	hsl(245, 74%, 32%)
HSV	hsv(245, 85%, 56%)
CMYK	cmyk(78.2%, 85.2%, 0%, 44.3%)
CIE-LAB	lab(19.14, 44.41, -63.21)
CIE-LCH	lch(19.14, 77.25, 305.09°)
OKLab	oklab(32.27% 0.009 -0.1828)
OKLCH	oklch(32.27% 0.183 272.8)
XYZ	xyz(5.7141, 2.7800, 25.8214)
Luminance	0.0278 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F158E #848E15

analogous

#15478E #1F158E #5C158E

triadic

#1F158E #8E1F15 #158E1F

tetradic

#1F158E #8E1547 #848E15 #158E5C

square

#1F158E #8E1547 #848E15 #158E5C

split-complementary

#1F158E #8E5C15 #478E15

monochromatic

#080523 #130D59 #1F158E #2B1DC3 #493BE2

Accessibility & contrast

On white

13.49

#1F158E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#1F158E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F158E

13.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F158E	#FFFFFF	#000000	##FFFFFF
##1F158E	1.00	13.49	1.56	13.49
#FFFFFF	13.49	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003491

Deuteranopia (green-blind)

#00298C

Tritanopia (blue-blind)

#003C53

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1f158e;
/* rgb */ color: rgb(31, 21, 142);
/* oklch */ color: oklch(32.3% 0.183 272.8);

Tailwind

colors: {
  custom: {
    50: '#7057b0',
    500: '#1f158e',
    950: '#000000',
  },
}

SCSS

$custom: #1f158e;
$custom-light: #7057b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1f158e",
  "rgb": {
    "r": 31,
    "g": 21,
    "b": 142
  },
  "hsl": {
    "h": 244.959,
    "s": 74.233,
    "l": 31.961
  },
  "oklch": {
    "l": 0.32267,
    "c": 0.18305,
    "h": 272.8
  },
  "luminance": 0.02781
}

Semantic roles & 50–950 ramp

primary

#1F158E

secondary

#B7C23D

accent

#F137E2

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090311

muted

#7B7880

Preview Lab

Preview with #1F158E

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

Preview Lab → · Contrast checker → · Palette generator →