#1D175F#1D175F

#1D175F is a dark, vivid blue. Relative luminance 0.017; OKLCH L 26.9% C 0.122 H 278.1°. Best body text is #FFFFFF at 15.67:1 contrast (WCAG AA passes).

Color values

HEX	#1D175F
RGB	rgb(29, 23, 95)
HSL	hsl(245, 61%, 23%)
HSV	hsv(245, 76%, 37%)
CMYK	cmyk(69.5%, 75.8%, 0%, 62.7%)
CIE-LAB	lab(13.83, 27.28, -41.72)
CIE-LCH	lch(13.83, 49.85, 303.18°)
OKLab	oklab(26.88% 0.0171 -0.1204)
OKLCH	oklch(26.88% 0.122 278.1)
XYZ	xyz(2.8780, 1.7000, 11.0007)
Luminance	0.0170 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D175F #595F17

analogous

#17355F #1D175F #41175F

triadic

#1D175F #5F1D17 #175F1D

tetradic

#1D175F #5F1735 #595F17 #175F41

square

#1D175F #5F1735 #595F17 #175F41

split-complementary

#1D175F #5F4117 #355F17

monochromatic

#080619 #0E0B2E #1D175F #2C2390 #3B2FC2

Accessibility & contrast

On white

15.67

#1D175F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#1D175F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D175F

15.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D175F	#FFFFFF	#000000	##FFFFFF
##1D175F	1.00	15.67	1.34	15.67
#FFFFFF	15.67	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002661

Deuteranopia (green-blind)

#00205E

Tritanopia (blue-blind)

#002B39

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #1d175f;
/* rgb */ color: rgb(29, 23, 95);
/* oklch */ color: oklch(26.9% 0.122 278.1);

Tailwind

colors: {
  custom: {
    50: '#63558d',
    500: '#1d175f',
    950: '#000000',
  },
}

SCSS

$custom: #1d175f;
$custom-light: #63558d;
$custom-dark: #000000;

JSON

{
  "hex": "#1d175f",
  "rgb": {
    "r": 29,
    "g": 23,
    "b": 95
  },
  "hsl": {
    "h": 245,
    "s": 61.017,
    "l": 23.137
  },
  "oklch": {
    "l": 0.2688,
    "c": 0.12165,
    "h": 278.1
  },
  "luminance": 0.017
}

Semantic roles & 50–950 ramp

primary

#1D175F

secondary

#8E963C

accent

#E444D7

background

#F6F4F8

surface

#EBE8F0

border

#C6C4CB

text

#06030C

muted

#7A787D

Preview Lab

Preview with #1D175F

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

Preview Lab → · Contrast checker → · Palette generator →