#1D175E#1D175E

#1D175E is a dark, vivid blue. Relative luminance 0.017; OKLCH L 26.8% C 0.120 H 278.3°. Best body text is #FFFFFF at 15.71:1 contrast (WCAG AA passes).

Color values

HEX	#1D175E
RGB	rgb(29, 23, 94)
HSL	hsl(245, 61%, 23%)
HSV	hsv(245, 76%, 37%)
CMYK	cmyk(69.1%, 75.5%, 0%, 63.1%)
CIE-LAB	lab(13.72, 26.92, -41.23)
CIE-LCH	lch(13.72, 49.24, 303.14°)
OKLab	oklab(26.77% 0.0173 -0.119)
OKLCH	oklch(26.77% 0.12 278.3)
XYZ	xyz(2.8328, 1.6819, 10.7629)
Luminance	0.0168 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D175E #585E17

analogous

#17355E #1D175E #40175E

triadic

#1D175E #5E1D17 #175E1D

tetradic

#1D175E #5E1735 #585E17 #175E40

square

#1D175E #5E1735 #585E17 #175E40

split-complementary

#1D175E #5E4017 #355E17

monochromatic

#080619 #0E0B2D #1D175E #2C238F #3B2FC0

Accessibility & contrast

On white

15.71

#1D175E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#1D175E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D175E

15.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D175E	#FFFFFF	#000000	##FFFFFF
##1D175E	1.00	15.71	1.34	15.71
#FFFFFF	15.71	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002660

Deuteranopia (green-blind)

#00205D

Tritanopia (blue-blind)

#002A38

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #1d175e;
/* rgb */ color: rgb(29, 23, 94);
/* oklch */ color: oklch(26.8% 0.120 278.3);

Tailwind

colors: {
  custom: {
    50: '#63558c',
    500: '#1d175e',
    950: '#000000',
  },
}

SCSS

$custom: #1d175e;
$custom-light: #63558c;
$custom-dark: #000000;

JSON

{
  "hex": "#1d175e",
  "rgb": {
    "r": 29,
    "g": 23,
    "b": 94
  },
  "hsl": {
    "h": 245.07,
    "s": 60.684,
    "l": 22.941
  },
  "oklch": {
    "l": 0.26772,
    "c": 0.12025,
    "h": 278.3
  },
  "luminance": 0.01682
}

Semantic roles & 50–950 ramp

primary

#1D175E

secondary

#8D953C

accent

#E444D6

background

#F6F4F8

surface

#EBE8F0

border

#C6C4CB

text

#06030C

muted

#7A787D

Preview Lab

Preview with #1D175E

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

Preview Lab → · Contrast checker → · Palette generator →