#1F1375#1F1375

#1F1375 is a dark, vivid blue. Relative luminance 0.020; OKLCH L 29.0% C 0.154 H 276.3°. Best body text is #FFFFFF at 14.91:1 contrast (WCAG AA passes).

Color values

HEX	#1F1375
RGB	rgb(31, 19, 117)
HSL	hsl(247, 72%, 27%)
HSV	hsv(247, 84%, 46%)
CMYK	cmyk(73.5%, 83.8%, 0%, 54.1%)
CIE-LAB	lab(15.70, 37.39, -53.06)
CIE-LCH	lch(15.70, 64.91, 305.17°)
OKLab	oklab(28.99% 0.0169 -0.1534)
OKLCH	oklch(28.99% 0.154 276.3)
XYZ	xyz(4.0078, 2.0410, 17.0089)
Luminance	0.0204 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1375 #697513

analogous

#133875 #1F1375 #501375

triadic

#1F1375 #751F13 #13751F

tetradic

#1F1375 #751338 #697513 #137550

square

#1F1375 #751338 #697513 #137550

split-complementary

#1F1375 #755013 #387513

monochromatic

#07041A #110A40 #1F1375 #2D1CAA #3D27DC

Accessibility & contrast

On white

14.91

#1F1375 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.41

#1F1375 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1375

14.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1375	#FFFFFF	#000000	##FFFFFF
##1F1375	1.00	14.91	1.41	14.91
#FFFFFF	14.91	1.00	21.00	1.00
#000000	1.41	21.00	1.00	21.00
##FFFFFF	14.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002B78

Deuteranopia (green-blind)

#002373

Tritanopia (blue-blind)

#003144

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #1f1375;
/* rgb */ color: rgb(31, 19, 117);
/* oklch */ color: oklch(29.0% 0.154 276.3);

Tailwind

colors: {
  custom: {
    50: '#6a549e',
    500: '#1f1375',
    950: '#000000',
  },
}

SCSS

$custom: #1f1375;
$custom-light: #6a549e;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1375",
  "rgb": {
    "r": 31,
    "g": 19,
    "b": 117
  },
  "hsl": {
    "h": 247.347,
    "s": 72.059,
    "l": 26.667
  },
  "oklch": {
    "l": 0.2899,
    "c": 0.15428,
    "h": 276.3
  },
  "luminance": 0.02041
}

Semantic roles & 50–950 ramp

primary

#1F1375

secondary

#9DAB38

accent

#EF39D9

background

#F6F4F9

surface

#ECE8F2

border

#C7C4CC

text

#08030E

muted

#7A787E

Preview Lab

Preview with #1F1375

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

Preview Lab → · Contrast checker → · Palette generator →