#1D317A#1D317A

#1D317A is a dark, vivid blue. Relative luminance 0.039; OKLCH L 34.5% C 0.127 H 267.6°. Best body text is #FFFFFF at 11.85:1 contrast (WCAG AA passes).

Color values

HEX	#1D317A
RGB	rgb(29, 49, 122)
HSL	hsl(227, 62%, 30%)
HSV	hsv(227, 76%, 48%)
CMYK	cmyk(76.2%, 59.8%, 0%, 52.2%)
CIE-LAB	lab(23.21, 19.78, -43.93)
CIE-LCH	lch(23.21, 48.18, 294.24°)
OKLab	oklab(34.55% -0.0054 -0.1267)
OKLCH	oklch(34.55% 0.127 267.6)
XYZ	xyz(5.1166, 3.8624, 18.8844)
Luminance	0.0386 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D317A #7A661D

analogous

#1D607A #1D317A #381D7A

triadic

#1D317A #7A1D31 #317A1D

tetradic

#1D317A #7A1D60 #7A661D #1D7A38

square

#1D317A #7A1D60 #7A661D #1D7A38

split-complementary

#1D317A #7A381D #607A1D

monochromatic

#060A19 #111D49 #1D317A #2945AB #405FD2

Accessibility & contrast

On white

11.85

#1D317A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#1D317A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D317A

11.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D317A	#FFFFFF	#000000	##FFFFFF
##1D317A	1.00	11.85	1.77	11.85
#FFFFFF	11.85	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C7C

Deuteranopia (green-blind)

#003379

Tritanopia (blue-blind)

#004350

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1d317a;
/* rgb */ color: rgb(29, 49, 122);
/* oklch */ color: oklch(34.5% 0.127 267.6);

Tailwind

colors: {
  custom: {
    50: '#6868a1',
    500: '#1d317a',
    950: '#000000',
  },
}

SCSS

$custom: #1d317a;
$custom-light: #6868a1;
$custom-dark: #000000;

JSON

{
  "hex": "#1d317a",
  "rgb": {
    "r": 29,
    "g": 49,
    "b": 122
  },
  "hsl": {
    "h": 227.097,
    "s": 61.589,
    "l": 29.608
  },
  "oklch": {
    "l": 0.34547,
    "c": 0.12683,
    "h": 267.6
  },
  "luminance": 0.03863
}

Semantic roles & 50–950 ramp

primary

#1D317A

secondary

#AE9745

accent

#C243E5

background

#F6F6FA

surface

#EBEBF3

border

#C6C6CD

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1D317A

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

Preview Lab → · Contrast checker → · Palette generator →