#1D1FA7#1D1FA7

#1D1FA7 is a dark, highly saturated blue. Relative luminance 0.040; OKLCH L 36.3% C 0.205 H 269.6°. Best body text is #FFFFFF at 11.63:1 contrast (WCAG AA passes).

Color values

HEX	#1D1FA7
RGB	rgb(29, 31, 167)
HSL	hsl(239, 70%, 38%)
HSV	hsv(239, 83%, 65%)
CMYK	cmyk(82.6%, 81.4%, 0%, 34.5%)
CIE-LAB	lab(23.77, 47.41, -70.88)
CIE-LCH	lch(23.77, 85.28, 303.78°)
OKLab	oklab(36.34% -0.0016 -0.2053)
OKLCH	oklch(36.34% 0.205 269.6)
XYZ	xyz(7.9694, 4.0303, 36.9096)
Luminance	0.0403 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D1FA7 #A7A51D

analogous

#1D64A7 #1D1FA7 #601DA7

triadic

#1D1FA7 #A71D1F #1FA71D

tetradic

#1D1FA7 #A71D64 #A7A51D #1DA760

square

#1D1FA7 #A71D64 #A7A51D #1DA760

split-complementary

#1D1FA7 #A7601D #64A71D

monochromatic

#0B0C3F #141573 #1D1FA7 #282ADA #5C5EE3

Accessibility & contrast

On white

11.63

#1D1FA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#1D1FA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D1FA7

11.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D1FA7	#FFFFFF	#000000	##FFFFFF
##1D1FA7	1.00	11.63	1.81	11.63
#FFFFFF	11.63	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0040AB

Deuteranopia (green-blind)

#0031A5

Tritanopia (blue-blind)

#004A64

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1d1fa7;
/* rgb */ color: rgb(29, 31, 167);
/* oklch */ color: oklch(36.3% 0.205 269.6);

Tailwind

colors: {
  custom: {
    50: '#755ec3',
    500: '#1d1fa7',
    950: '#000000',
  },
}

SCSS

$custom: #1d1fa7;
$custom-light: #755ec3;
$custom-dark: #000000;

JSON

{
  "hex": "#1d1fa7",
  "rgb": {
    "r": 29,
    "g": 31,
    "b": 167
  },
  "hsl": {
    "h": 239.13,
    "s": 70.408,
    "l": 38.431
  },
  "oklch": {
    "l": 0.36337,
    "c": 0.20527,
    "h": 269.6
  },
  "luminance": 0.04031
}

Semantic roles & 50–950 ramp

primary

#1D1FA7

secondary

#C7C559

accent

#EB3BED

background

#F7F5FC

surface

#EEE9F8

border

#C9C5D1

text

#0A0513

muted

#7C7982

Preview Lab

Preview with #1D1FA7

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

Preview Lab → · Contrast checker → · Palette generator →