#1F1577#1F1577

#1F1577 is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.5% C 0.155 H 275.7°. Best body text is #FFFFFF at 14.66:1 contrast (WCAG AA passes).

Color values

HEX	#1F1577
RGB	rgb(31, 21, 119)
HSL	hsl(246, 70%, 27%)
HSV	hsv(246, 82%, 47%)
CMYK	cmyk(73.9%, 82.4%, 0%, 53.3%)
CIE-LAB	lab(16.30, 37.00, -53.35)
CIE-LCH	lch(16.30, 64.93, 304.75°)
OKLab	oklab(29.48% 0.0154 -0.1542)
OKLCH	oklch(29.48% 0.155 275.7)
XYZ	xyz(4.1619, 2.1591, 17.6466)
Luminance	0.0216 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1577 #6D7715

analogous

#153C77 #1F1577 #501577

triadic

#1F1577 #771F15 #15771F

tetradic

#1F1577 #77153C #6D7715 #157750

square

#1F1577 #77153C #6D7715 #157750

split-complementary

#1F1577 #775015 #3C7715

monochromatic

#07051A #110C43 #1F1577 #2D1EAB #3E2DDA

Accessibility & contrast

On white

14.66

#1F1577 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.43

#1F1577 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1577

14.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1577	#FFFFFF	#000000	##FFFFFF
##1F1577	1.00	14.66	1.43	14.66
#FFFFFF	14.66	1.00	21.00	1.00
#000000	1.43	21.00	1.00	21.00
##FFFFFF	14.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D7A

Deuteranopia (green-blind)

#002475

Tritanopia (blue-blind)

#003346

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #1f1577;
/* rgb */ color: rgb(31, 21, 119);
/* oklch */ color: oklch(29.5% 0.155 275.7);

Tailwind

colors: {
  custom: {
    50: '#6a559f',
    500: '#1f1577',
    950: '#000000',
  },
}

SCSS

$custom: #1f1577;
$custom-light: #6a559f;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1577",
  "rgb": {
    "r": 31,
    "g": 21,
    "b": 119
  },
  "hsl": {
    "h": 246.122,
    "s": 70,
    "l": 27.451
  },
  "oklch": {
    "l": 0.29478,
    "c": 0.155,
    "h": 275.7
  },
  "luminance": 0.0216
}

Semantic roles & 50–950 ramp

primary

#1F1577

secondary

#A1AD3B

accent

#ED3BDB

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#08030F

muted

#7A787E

Preview Lab

Preview with #1F1577

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

Preview Lab → · Contrast checker → · Palette generator →