#1D179E#1D179E

#1D179E is a dark, highly saturated blue. Relative luminance 0.033; OKLCH L 34.3% C 0.201 H 270.6°. Best body text is #FFFFFF at 12.59:1 contrast (WCAG AA passes).

Color values

HEX	#1D179E
RGB	rgb(29, 23, 158)
HSL	hsl(243, 75%, 35%)
HSV	hsv(243, 85%, 62%)
CMYK	cmyk(81.6%, 85.4%, 0%, 38%)
CIE-LAB	lab(21.36, 48.36, -69.40)
CIE-LCH	lch(21.36, 84.59, 304.87°)
OKLab	oklab(34.35% 0.002 -0.2008)
OKLCH	oklch(34.35% 0.201 270.6)
XYZ	xyz(6.9826, 3.3418, 32.6181)
Luminance	0.0334 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D179E #989E17

analogous

#17549E #1D179E #61179E

triadic

#1D179E #9E1D17 #179E1D

tetradic

#1D179E #9E1754 #989E17 #179E61

square

#1D179E #9E1754 #989E17 #179E61

split-complementary

#1D179E #9E6117 #549E17

monochromatic

#090733 #130F69 #1D179E #271FD3 #524BE5

Accessibility & contrast

On white

12.59

#1D179E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#1D179E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D179E

12.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D179E	#FFFFFF	#000000	##FFFFFF
##1D179E	1.00	12.59	1.67	12.59
#FFFFFF	12.59	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003AA2

Deuteranopia (green-blind)

#002C9C

Tritanopia (blue-blind)

#00445D

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1d179e;
/* rgb */ color: rgb(29, 23, 158);
/* oklch */ color: oklch(34.3% 0.201 270.6);

Tailwind

colors: {
  custom: {
    50: '#7459bc',
    500: '#1d179e',
    950: '#000000',
  },
}

SCSS

$custom: #1d179e;
$custom-light: #7459bc;
$custom-dark: #000000;

JSON

{
  "hex": "#1d179e",
  "rgb": {
    "r": 29,
    "g": 23,
    "b": 158
  },
  "hsl": {
    "h": 242.667,
    "s": 74.586,
    "l": 35.49
  },
  "oklch": {
    "l": 0.34348,
    "c": 0.20083,
    "h": 270.6
  },
  "luminance": 0.03343
}

Semantic roles & 50–950 ramp

primary

#1D179E

secondary

#C1C64A

accent

#F137E9

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #1D179E

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

Preview Lab → · Contrast checker → · Palette generator →