#1D177F#1D177F

#1D177F is a dark, vivid blue. Relative luminance 0.024; OKLCH L 30.5% C 0.164 H 273.4°. Best body text is #FFFFFF at 14.18:1 contrast (WCAG AA passes).

Color values

HEX	#1D177F
RGB	rgb(29, 23, 127)
HSL	hsl(243, 69%, 29%)
HSV	hsv(243, 82%, 50%)
CMYK	cmyk(77.2%, 81.9%, 0%, 50.2%)
CIE-LAB	lab(17.49, 38.43, -56.51)
CIE-LCH	lch(17.49, 68.34, 304.22°)
OKLab	oklab(30.55% 0.0097 -0.1635)
OKLCH	oklch(30.55% 0.164 273.4)
XYZ	xyz(4.6426, 2.4058, 20.2943)
Luminance	0.0241 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D177F #797F17

analogous

#17457F #1D177F #51177F

triadic

#1D177F #7F1D17 #177F1D

tetradic

#1D177F #7F1745 #797F17 #177F51

square

#1D177F #7F1745 #797F17 #177F51

split-complementary

#1D177F #7F5117 #457F17

monochromatic

#06051A #110E4B #1D177F #2920B3 #3F36DB

Accessibility & contrast

On white

14.18

#1D177F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.48

#1D177F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D177F

14.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D177F	#FFFFFF	#000000	##FFFFFF
##1D177F	1.00	14.18	1.48	14.18
#FFFFFF	14.18	1.00	21.00	1.00
#000000	1.48	21.00	1.00	21.00
##FFFFFF	14.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003082

Deuteranopia (green-blind)

#00267D

Tritanopia (blue-blind)

#00374B

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #1d177f;
/* rgb */ color: rgb(29, 23, 127);
/* oklch */ color: oklch(30.5% 0.164 273.4);

Tailwind

colors: {
  custom: {
    50: '#6b57a5',
    500: '#1d177f',
    950: '#000000',
  },
}

SCSS

$custom: #1d177f;
$custom-light: #6b57a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1d177f",
  "rgb": {
    "r": 29,
    "g": 23,
    "b": 127
  },
  "hsl": {
    "h": 243.462,
    "s": 69.333,
    "l": 29.412
  },
  "oklch": {
    "l": 0.30549,
    "c": 0.16377,
    "h": 273.4
  },
  "luminance": 0.02406
}

Semantic roles & 50–950 ramp

primary

#1D177F

secondary

#ADB43E

accent

#EC3CE2

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08030F

muted

#7B787F

Preview Lab

Preview with #1D177F

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

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