#1D2580#1D2580

#1D2580 is a dark, vivid blue. Relative luminance 0.031; OKLCH L 32.8% C 0.150 H 271.0°. Best body text is #FFFFFF at 12.89:1 contrast (WCAG AA passes).

Color values

HEX	#1D2580
RGB	rgb(29, 37, 128)
HSL	hsl(235, 63%, 31%)
HSV	hsv(235, 77%, 50%)
CMYK	cmyk(77.3%, 71.1%, 0%, 49.8%)
CIE-LAB	lab(20.61, 30.35, -52.00)
CIE-LCH	lch(20.61, 60.21, 300.27°)
OKLab	oklab(32.8% 0.0027 -0.1504)
OKLCH	oklch(32.8% 0.15 271)
XYZ	xyz(5.0632, 3.1423, 20.7576)
Luminance	0.0314 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D2580 #80781D

analogous

#1D5680 #1D2580 #471D80

triadic

#1D2580 #801D25 #25801D

tetradic

#1D2580 #801D56 #80781D #1D8047

square

#1D2580 #801D56 #80781D #1D8047

split-complementary

#1D2580 #80471D #56801D

monochromatic

#06081C #12174E #1D2580 #2833B2 #434FD4

Accessibility & contrast

On white

12.89

#1D2580 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#1D2580 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D2580

12.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D2580	#FFFFFF	#000000	##FFFFFF
##1D2580	1.00	12.89	1.63	12.89
#FFFFFF	12.89	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003683

Deuteranopia (green-blind)

#002D7E

Tritanopia (blue-blind)

#003E4F

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1d2580;
/* rgb */ color: rgb(29, 37, 128);
/* oklch */ color: oklch(32.8% 0.150 271.0);

Tailwind

colors: {
  custom: {
    50: '#6a60a6',
    500: '#1d2580',
    950: '#000000',
  },
}

SCSS

$custom: #1d2580;
$custom-light: #6a60a6;
$custom-dark: #000000;

JSON

{
  "hex": "#1d2580",
  "rgb": {
    "r": 29,
    "g": 37,
    "b": 128
  },
  "hsl": {
    "h": 235.152,
    "s": 63.057,
    "l": 30.784
  },
  "oklch": {
    "l": 0.32799,
    "c": 0.15047,
    "h": 271
  },
  "luminance": 0.03143
}

Semantic roles & 50–950 ramp

primary

#1D2580

secondary

#B3AA45

accent

#D942E6

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08050F

muted

#7A797F

Preview Lab

Preview with #1D2580

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

Preview Lab → · Contrast checker → · Palette generator →