#1F1B85#1F1B85

#1F1B85 is a dark, vivid blue. Relative luminance 0.028; OKLCH L 31.9% C 0.167 H 273.2°. Best body text is #FFFFFF at 13.52:1 contrast (WCAG AA passes).

Color values

HEX	#1F1B85
RGB	rgb(31, 27, 133)
HSL	hsl(242, 66%, 31%)
HSV	hsv(242, 80%, 52%)
CMYK	cmyk(76.7%, 79.7%, 0%, 47.8%)
CIE-LAB	lab(19.09, 38.43, -57.65)
CIE-LCH	lch(19.09, 69.28, 303.69°)
OKLab	oklab(31.92% 0.0092 -0.1668)
OKLCH	oklch(31.92% 0.167 273.2)
XYZ	xyz(5.1892, 2.7681, 22.4466)
Luminance	0.0277 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1B85 #81851B

analogous

#1B4C85 #1F1B85 #541B85

triadic

#1F1B85 #851F1B #1B851F

tetradic

#1F1B85 #851B4C #81851B #1B8554

square

#1F1B85 #851B4C #81851B #1B8554

split-complementary

#1F1B85 #85541B #4C851B

monochromatic

#07061F #131152 #1F1B85 #2B25B8 #4742D9

Accessibility & contrast

On white

13.52

#1F1B85 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#1F1B85 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1B85

13.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1B85	#FFFFFF	#000000	##FFFFFF
##1F1B85	1.00	13.52	1.55	13.52
#FFFFFF	13.52	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003388

Deuteranopia (green-blind)

#002983

Tritanopia (blue-blind)

#003B4F

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1f1b85;
/* rgb */ color: rgb(31, 27, 133);
/* oklch */ color: oklch(31.9% 0.167 273.2);

Tailwind

colors: {
  custom: {
    50: '#6d5aaa',
    500: '#1f1b85',
    950: '#000000',
  },
}

SCSS

$custom: #1f1b85;
$custom-light: #6d5aaa;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1b85",
  "rgb": {
    "r": 31,
    "g": 27,
    "b": 133
  },
  "hsl": {
    "h": 242.264,
    "s": 66.25,
    "l": 31.373
  },
  "oklch": {
    "l": 0.31915,
    "c": 0.16707,
    "h": 273.2
  },
  "luminance": 0.02769
}

Semantic roles & 50–950 ramp

primary

#1F1B85

secondary

#B4B844

accent

#E93FE3

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #1F1B85

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

Preview Lab → · Contrast checker → · Palette generator →