#1D175A#1D175A

#1D175A is a dark, moderate blue. Relative luminance 0.016; OKLCH L 26.3% C 0.115 H 279.1°. Best body text is #FFFFFF at 15.88:1 contrast (WCAG AA passes).

Color values

HEX	#1D175A
RGB	rgb(29, 23, 90)
HSL	hsl(245, 59%, 22%)
HSV	hsv(245, 74%, 35%)
CMYK	cmyk(67.8%, 74.4%, 0%, 64.7%)
CIE-LAB	lab(13.30, 25.46, -39.24)
CIE-LCH	lch(13.30, 46.77, 302.98°)
OKLab	oklab(26.35% 0.018 -0.1132)
OKLCH	oklch(26.35% 0.115 279.1)
XYZ	xyz(2.6580, 1.6120, 9.8420)
Luminance	0.0161 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D175A #545A17

analogous

#17335A #1D175A #3F175A

triadic

#1D175A #5A1D17 #175A1D

tetradic

#1D175A #5A1733 #545A17 #175A3F

square

#1D175A #5A1733 #545A17 #175A3F

split-complementary

#1D175A #5A3F17 #335A17

monochromatic

#080618 #0D0B29 #1D175A #2D238B #3C30BB

Accessibility & contrast

On white

15.88

#1D175A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.32

#1D175A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D175A

15.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D175A	#FFFFFF	#000000	##FFFFFF
##1D175A	1.00	15.88	1.32	15.88
#FFFFFF	15.88	1.00	21.00	1.00
#000000	1.32	21.00	1.00	21.00
##FFFFFF	15.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00255C

Deuteranopia (green-blind)

#001F59

Tritanopia (blue-blind)

#002936

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #1d175a;
/* rgb */ color: rgb(29, 23, 90);
/* oklch */ color: oklch(26.3% 0.115 279.1);

Tailwind

colors: {
  custom: {
    50: '#625589',
    500: '#1d175a',
    950: '#000000',
  },
}

SCSS

$custom: #1d175a;
$custom-light: #625589;
$custom-dark: #000000;

JSON

{
  "hex": "#1d175a",
  "rgb": {
    "r": 29,
    "g": 23,
    "b": 90
  },
  "hsl": {
    "h": 245.373,
    "s": 59.292,
    "l": 22.157
  },
  "oklch": {
    "l": 0.26345,
    "c": 0.11459,
    "h": 279.1
  },
  "luminance": 0.01612
}

Semantic roles & 50–950 ramp

primary

#1D175A

secondary

#89913C

accent

#E245D4

background

#F6F4F8

surface

#EBE8F0

border

#C6C4CB

text

#06030C

muted

#7A787D

Preview Lab

Preview with #1D175A

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

Preview Lab → · Contrast checker → · Palette generator →