#1D1FA0#1D1FA0

#1D1FA0 is a dark, vivid blue. Relative luminance 0.038; OKLCH L 35.5% C 0.197 H 269.9°. Best body text is #FFFFFF at 11.96:1 contrast (WCAG AA passes).

Color values

HEX	#1D1FA0
RGB	rgb(29, 31, 160)
HSL	hsl(239, 69%, 37%)
HSV	hsv(239, 82%, 63%)
CMYK	cmyk(81.9%, 80.6%, 0%, 37.3%)
CIE-LAB	lab(22.92, 45.14, -68.03)
CIE-LCH	lch(22.92, 81.65, 303.57°)
OKLab	oklab(35.5% -0.0002 -0.197)
OKLCH	oklch(35.5% 0.197 269.9)
XYZ	xyz(7.3397, 3.7784, 33.5934)
Luminance	0.0378 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D1FA0 #A09E1D

analogous

#1D61A0 #1D1FA0 #5D1DA0

triadic

#1D1FA0 #A01D1F #1FA01D

tetradic

#1D1FA0 #A01D61 #A09E1D #1DA05D

square

#1D1FA0 #A01D61 #A09E1D #1DA05D

split-complementary

#1D1FA0 #A05D1D #61A01D

monochromatic

#0A0B38 #14156C #1D1FA0 #2629D4 #5759E1

Accessibility & contrast

On white

11.96

#1D1FA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#1D1FA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D1FA0

11.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D1FA0	#FFFFFF	#000000	##FFFFFF
##1D1FA0	1.00	11.96	1.76	11.96
#FFFFFF	11.96	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003DA4

Deuteranopia (green-blind)

#00309E

Tritanopia (blue-blind)

#004760

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1d1fa0;
/* rgb */ color: rgb(29, 31, 160);
/* oklch */ color: oklch(35.5% 0.197 269.9);

Tailwind

colors: {
  custom: {
    50: '#735ebd',
    500: '#1d1fa0',
    950: '#000000',
  },
}

SCSS

$custom: #1d1fa0;
$custom-light: #735ebd;
$custom-dark: #000000;

JSON

{
  "hex": "#1d1fa0",
  "rgb": {
    "r": 29,
    "g": 31,
    "b": 160
  },
  "hsl": {
    "h": 239.084,
    "s": 69.312,
    "l": 37.059
  },
  "oklch": {
    "l": 0.35503,
    "c": 0.19701,
    "h": 269.9
  },
  "luminance": 0.03779
}

Semantic roles & 50–950 ramp

primary

#1D1FA0

secondary

#C4C255

accent

#E93CEC

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #1D1FA0

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

Preview Lab → · Contrast checker → · Palette generator →