#1F1B89#1F1B89

#1F1B89 is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.4% C 0.172 H 272.8°. Best body text is #FFFFFF at 13.32:1 contrast (WCAG AA passes).

Color values

HEX	#1F1B89
RGB	rgb(31, 27, 137)
HSL	hsl(242, 67%, 32%)
HSV	hsv(242, 80%, 54%)
CMYK	cmyk(77.4%, 80.3%, 0%, 46.3%)
CIE-LAB	lab(19.56, 39.78, -59.39)
CIE-LCH	lch(19.56, 71.48, 303.82°)
OKLab	oklab(32.38% 0.0083 -0.1718)
OKLCH	oklch(32.38% 0.172 272.8)
XYZ	xyz(5.4709, 2.8807, 23.9298)
Luminance	0.0288 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1B89 #85891B

analogous

#1B4E89 #1F1B89 #561B89

triadic

#1F1B89 #891F1B #1B891F

tetradic

#1F1B89 #891B4E #85891B #1B8956

square

#1F1B89 #891B4E #85891B #1B8956

split-complementary

#1F1B89 #89561B #4E891B

monochromatic

#080723 #131156 #1F1B89 #2B25BC #4A44DA

Accessibility & contrast

On white

13.32

#1F1B89 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#1F1B89 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1B89

13.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1B89	#FFFFFF	#000000	##FFFFFF
##1F1B89	1.00	13.32	1.58	13.32
#FFFFFF	13.32	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00358C

Deuteranopia (green-blind)

#002A87

Tritanopia (blue-blind)

#003D52

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1f1b89;
/* rgb */ color: rgb(31, 27, 137);
/* oklch */ color: oklch(32.4% 0.172 272.8);

Tailwind

colors: {
  custom: {
    50: '#6e5aad',
    500: '#1f1b89',
    950: '#000000',
  },
}

SCSS

$custom: #1f1b89;
$custom-light: #6e5aad;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1b89",
  "rgb": {
    "r": 31,
    "g": 27,
    "b": 137
  },
  "hsl": {
    "h": 242.182,
    "s": 67.073,
    "l": 32.157
  },
  "oklch": {
    "l": 0.32382,
    "c": 0.17205,
    "h": 272.8
  },
  "luminance": 0.02881
}

Semantic roles & 50–950 ramp

primary

#1F1B89

secondary

#B7BC44

accent

#EA3EE4

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090410

muted

#7B797F

Preview Lab

Preview with #1F1B89

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

Preview Lab → · Contrast checker → · Palette generator →