#1D175B#1D175B

#1D175B is a dark, moderate blue. Relative luminance 0.016; OKLCH L 26.5% C 0.116 H 278.9°. Best body text is #FFFFFF at 15.84:1 contrast (WCAG AA passes).

Color values

HEX	#1D175B
RGB	rgb(29, 23, 91)
HSL	hsl(245, 60%, 22%)
HSV	hsv(245, 75%, 36%)
CMYK	cmyk(68.1%, 74.7%, 0%, 64.3%)
CIE-LAB	lab(13.41, 25.83, -39.74)
CIE-LCH	lch(13.41, 47.39, 303.02°)
OKLab	oklab(26.45% 0.0179 -0.1146)
OKLCH	oklch(26.45% 0.116 278.9)
XYZ	xyz(2.7008, 1.6291, 10.0676)
Luminance	0.0163 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D175B #555B17

analogous

#17335B #1D175B #3F175B

triadic

#1D175B #5B1D17 #175B1D

tetradic

#1D175B #5B1733 #555B17 #175B3F

square

#1D175B #5B1733 #555B17 #175B3F

split-complementary

#1D175B #5B3F17 #335B17

monochromatic

#080618 #0D0B2A #1D175B #2D238C #3C30BD

Accessibility & contrast

On white

15.84

#1D175B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.33

#1D175B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D175B

15.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D175B	#FFFFFF	#000000	##FFFFFF
##1D175B	1.00	15.84	1.33	15.84
#FFFFFF	15.84	1.00	21.00	1.00
#000000	1.33	21.00	1.00	21.00
##FFFFFF	15.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00255D

Deuteranopia (green-blind)

#00205A

Tritanopia (blue-blind)

#002937

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #1d175b;
/* rgb */ color: rgb(29, 23, 91);
/* oklch */ color: oklch(26.5% 0.116 278.9);

Tailwind

colors: {
  custom: {
    50: '#62558a',
    500: '#1d175b',
    950: '#000000',
  },
}

SCSS

$custom: #1d175b;
$custom-light: #62558a;
$custom-dark: #000000;

JSON

{
  "hex": "#1d175b",
  "rgb": {
    "r": 29,
    "g": 23,
    "b": 91
  },
  "hsl": {
    "h": 245.294,
    "s": 59.649,
    "l": 22.353
  },
  "oklch": {
    "l": 0.26451,
    "c": 0.11601,
    "h": 278.9
  },
  "luminance": 0.01629
}

Semantic roles & 50–950 ramp

primary

#1D175B

secondary

#8A923C

accent

#E345D5

background

#F6F4F8

surface

#EBE8F0

border

#C6C4CB

text

#06030C

muted

#7A787D

Preview Lab

Preview with #1D175B

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

Preview Lab → · Contrast checker → · Palette generator →