#1D2971#1D2971

#1D2971 is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.1% C 0.124 H 270.4°. Best body text is #FFFFFF at 13.06:1 contrast (WCAG AA passes).

Color values

HEX	#1D2971
RGB	rgb(29, 41, 113)
HSL	hsl(231, 59%, 28%)
HSV	hsv(231, 74%, 44%)
CMYK	cmyk(74.3%, 63.7%, 0%, 55.7%)
CIE-LAB	lab(20.20, 21.84, -43.09)
CIE-LCH	lch(20.20, 48.31, 296.89°)
OKLab	oklab(32.06% 0.001 -0.1243)
OKLCH	oklch(32.06% 0.124 270.4)
XYZ	xyz(4.2793, 3.0389, 15.9806)
Luminance	0.0304 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D2971 #71651D

analogous

#1D5371 #1D2971 #3B1D71

triadic

#1D2971 #711D29 #29711D

tetradic

#1D2971 #711D53 #71651D #1D713B

square

#1D2971 #711D53 #71651D #1D713B

split-complementary

#1D2971 #713B1D #53711D

monochromatic

#060918 #111740 #1D2971 #293BA2 #3C50CD

Accessibility & contrast

On white

13.06

#1D2971 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.61

#1D2971 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D2971

13.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D2971	#FFFFFF	#000000	##FFFFFF
##1D2971	1.00	13.06	1.61	13.06
#FFFFFF	13.06	1.00	21.00	1.00
#000000	1.61	21.00	1.00	21.00
##FFFFFF	13.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003573

Deuteranopia (green-blind)

#002D70

Tritanopia (blue-blind)

#003B48

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #1d2971;
/* rgb */ color: rgb(29, 41, 113);
/* oklch */ color: oklch(32.1% 0.124 270.4);

Tailwind

colors: {
  custom: {
    50: '#66629a',
    500: '#1d2971',
    950: '#000000',
  },
}

SCSS

$custom: #1d2971;
$custom-light: #66629a;
$custom-dark: #000000;

JSON

{
  "hex": "#1d2971",
  "rgb": {
    "r": 29,
    "g": 41,
    "b": 113
  },
  "hsl": {
    "h": 231.429,
    "s": 59.155,
    "l": 27.843
  },
  "oklch": {
    "l": 0.32061,
    "c": 0.12434,
    "h": 270.4
  },
  "luminance": 0.03039
}

Semantic roles & 50–950 ramp

primary

#1D2971

secondary

#A59744

accent

#CC45E2

background

#F6F5F9

surface

#EBEAF2

border

#C6C6CC

text

#06050E

muted

#7A797E

Preview Lab

Preview with #1D2971

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

Preview Lab → · Contrast checker → · Palette generator →