#1D1F91#1D1F91

#1D1F91 is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.7% C 0.179 H 270.9°. Best body text is #FFFFFF at 12.67:1 contrast (WCAG AA passes).

Color values

HEX	#1D1F91
RGB	rgb(29, 31, 145)
HSL	hsl(239, 67%, 34%)
HSV	hsv(239, 80%, 57%)
CMYK	cmyk(80%, 78.6%, 0%, 43.1%)
CIE-LAB	lab(21.15, 40.12, -61.75)
CIE-LCH	lch(21.15, 73.63, 303.01°)
OKLab	oklab(33.74% 0.0028 -0.1788)
OKLCH	oklch(33.74% 0.179 270.9)
XYZ	xyz(6.1058, 3.2848, 27.0948)
Luminance	0.0329 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D1F91 #918F1D

analogous

#1D5991 #1D1F91 #551D91

triadic

#1D1F91 #911D1F #1F911D

tetradic

#1D1F91 #911D59 #918F1D #1D9155

square

#1D1F91 #911D59 #918F1D #1D9155

split-complementary

#1D1F91 #91551D #59911D

monochromatic

#09092B #13145E #1D1F91 #272AC4 #4D4FDB

Accessibility & contrast

On white

12.67

#1D1F91 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#1D1F91 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D1F91

12.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D1F91	#FFFFFF	#000000	##FFFFFF
##1D1F91	1.00	12.67	1.66	12.67
#FFFFFF	12.67	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003994

Deuteranopia (green-blind)

#002D8F

Tritanopia (blue-blind)

#004157

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1d1f91;
/* rgb */ color: rgb(29, 31, 145);
/* oklch */ color: oklch(33.7% 0.179 270.9);

Tailwind

colors: {
  custom: {
    50: '#6f5db2',
    500: '#1d1f91',
    950: '#000000',
  },
}

SCSS

$custom: #1d1f91;
$custom-light: #6f5db2;
$custom-dark: #000000;

JSON

{
  "hex": "#1d1f91",
  "rgb": {
    "r": 29,
    "g": 31,
    "b": 145
  },
  "hsl": {
    "h": 238.966,
    "s": 66.667,
    "l": 34.118
  },
  "oklch": {
    "l": 0.33741,
    "c": 0.17881,
    "h": 270.9
  },
  "luminance": 0.03286
}

Semantic roles & 50–950 ramp

primary

#1D1F91

secondary

#BEBC4C

accent

#E73EEA

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #1D1F91

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

Preview Lab → · Contrast checker → · Palette generator →