#1D1CB3#1D1CB3

#1D1CB3 is a dark, highly saturated blue. Relative luminance 0.043; OKLCH L 37.5% C 0.221 H 269.1°. Best body text is #FFFFFF at 11.23:1 contrast (WCAG AA passes).

Color values

HEX	#1D1CB3
RGB	rgb(29, 28, 179)
HSL	hsl(240, 73%, 41%)
HSV	hsv(240, 84%, 70%)
CMYK	cmyk(83.8%, 84.4%, 0%, 29.8%)
CIE-LAB	lab(24.78, 52.58, -76.42)
CIE-LCH	lch(24.78, 92.77, 304.53°)
OKLab	oklab(37.46% -0.0035 -0.2212)
OKLCH	oklch(37.46% 0.221 269.1)
XYZ	xyz(9.0559, 4.3453, 43.0005)
Luminance	0.0435 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D1CB3 #B2B31C

analogous

#1C67B3 #1D1CB3 #681CB3

triadic

#1D1CB3 #B31D1C #1CB31D

tetradic

#1D1CB3 #B31C67 #B2B31C #1CB368

square

#1D1CB3 #B31C67 #B2B31C #1CB368

split-complementary

#1D1CB3 #B3681C #67B31C

monochromatic

#0C0B49 #14147E #1D1CB3 #2F2EDE #6463E7

Accessibility & contrast

On white

11.23

#1D1CB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#1D1CB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D1CB3

11.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D1CB3	#FFFFFF	#000000	##FFFFFF
##1D1CB3	1.00	11.23	1.87	11.23
#FFFFFF	11.23	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0042B7

Deuteranopia (green-blind)

#0033B1

Tritanopia (blue-blind)

#004E6A

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1d1cb3;
/* rgb */ color: rgb(29, 28, 179);
/* oklch */ color: oklch(37.5% 0.221 269.1);

Tailwind

colors: {
  custom: {
    50: '#795dcb',
    500: '#1d1cb3',
    950: '#000000',
  },
}

SCSS

$custom: #1d1cb3;
$custom-light: #795dcb;
$custom-dark: #000000;

JSON

{
  "hex": "#1d1cb3",
  "rgb": {
    "r": 29,
    "g": 28,
    "b": 179
  },
  "hsl": {
    "h": 240.397,
    "s": 72.947,
    "l": 40.588
  },
  "oklch": {
    "l": 0.37463,
    "c": 0.22125,
    "h": 269.1
  },
  "luminance": 0.04346
}

Semantic roles & 50–950 ramp

primary

#1D1CB3

secondary

#CBCB5F

accent

#F038EE

background

#F8F5FC

surface

#EFE9F9

border

#CAC5D2

text

#0B0514

muted

#7C7982

Preview Lab

Preview with #1D1CB3

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

Preview Lab → · Contrast checker → · Palette generator →