#1F1589#1F1589

#1F1589 is a dark, vivid blue. Relative luminance 0.026; OKLCH L 31.7% C 0.177 H 273.4°. Best body text is #FFFFFF at 13.75:1 contrast (WCAG AA passes).

Color values

HEX	#1F1589
RGB	rgb(31, 21, 137)
HSL	hsl(245, 73%, 31%)
HSV	hsv(245, 85%, 54%)
CMYK	cmyk(77.4%, 84.7%, 0%, 46.3%)
CIE-LAB	lab(18.51, 42.83, -61.12)
CIE-LCH	lch(18.51, 74.64, 305.02°)
OKLab	oklab(31.65% 0.0104 -0.1768)
OKLCH	oklch(31.65% 0.177 273.4)
XYZ	xyz(5.3471, 2.6332, 23.8885)
Luminance	0.0263 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1589 #7F8915

analogous

#154589 #1F1589 #591589

triadic

#1F1589 #891F15 #15891F

tetradic

#1F1589 #891545 #7F8915 #158959

square

#1F1589 #891545 #7F8915 #158959

split-complementary

#1F1589 #895915 #458915

monochromatic

#07051F #130D54 #1F1589 #2B1DBE #4638E0

Accessibility & contrast

On white

13.75

#1F1589 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#1F1589 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1589

13.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1589	#FFFFFF	#000000	##FFFFFF
##1F1589	1.00	13.75	1.53	13.75
#FFFFFF	13.75	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00328C

Deuteranopia (green-blind)

#002787

Tritanopia (blue-blind)

#003A51

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #1f1589;
/* rgb */ color: rgb(31, 21, 137);
/* oklch */ color: oklch(31.7% 0.177 273.4);

Tailwind

colors: {
  custom: {
    50: '#6f57ad',
    500: '#1f1589',
    950: '#000000',
  },
}

SCSS

$custom: #1f1589;
$custom-light: #6f57ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1589",
  "rgb": {
    "r": 31,
    "g": 21,
    "b": 137
  },
  "hsl": {
    "h": 245.172,
    "s": 73.418,
    "l": 30.98
  },
  "oklch": {
    "l": 0.31652,
    "c": 0.17709,
    "h": 273.4
  },
  "luminance": 0.02634
}

Semantic roles & 50–950 ramp

primary

#1F1589

secondary

#B2BD3D

accent

#F038E0

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090310

muted

#7B787F

Preview Lab

Preview with #1F1589

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

Preview Lab → · Contrast checker → · Palette generator →