#1D17B4#1D17B4

#1D17B4 is a dark, highly saturated blue. Relative luminance 0.042; OKLCH L 37.1% C 0.226 H 269.2°. Best body text is #FFFFFF at 11.45:1 contrast (WCAG AA passes).

Color values

HEX	#1D17B4
RGB	rgb(29, 23, 180)
HSL	hsl(242, 77%, 40%)
HSV	hsv(242, 87%, 71%)
CMYK	cmyk(83.9%, 87.2%, 0%, 29.4%)
CIE-LAB	lab(24.22, 54.94, -77.96)
CIE-LCH	lch(24.22, 95.37, 305.18°)
OKLab	oklab(37.11% -0.0032 -0.2255)
OKLCH	oklch(37.11% 0.226 269.2)
XYZ	xyz(9.0485, 4.1682, 43.4988)
Luminance	0.0417 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D17B4 #AEB417

analogous

#1760B4 #1D17B4 #6C17B4

triadic

#1D17B4 #B41D17 #17B41D

tetradic

#1D17B4 #B41760 #AEB417 #17B46C

square

#1D17B4 #B41760 #AEB417 #17B46C

split-complementary

#1D17B4 #B46C17 #60B417

monochromatic

#0C0947 #14107E #1D17B4 #2C25E3 #615BEA

Accessibility & contrast

On white

11.45

#1D17B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#1D17B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D17B4

11.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D17B4	#FFFFFF	#000000	##FFFFFF
##1D17B4	1.00	11.45	1.83	11.45
#FFFFFF	11.45	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0041B8

Deuteranopia (green-blind)

#0031B2

Tritanopia (blue-blind)

#004D6A

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1d17b4;
/* rgb */ color: rgb(29, 23, 180);
/* oklch */ color: oklch(37.1% 0.226 269.2);

Tailwind

colors: {
  custom: {
    50: '#795bcc',
    500: '#1d17b4',
    950: '#000000',
  },
}

SCSS

$custom: #1d17b4;
$custom-light: #795bcc;
$custom-dark: #000000;

JSON

{
  "hex": "#1d17b4",
  "rgb": {
    "r": 29,
    "g": 23,
    "b": 180
  },
  "hsl": {
    "h": 242.293,
    "s": 77.34,
    "l": 39.804
  },
  "oklch": {
    "l": 0.37113,
    "c": 0.22556,
    "h": 269.2
  },
  "luminance": 0.04169
}

Semantic roles & 50–950 ramp

primary

#1D17B4

secondary

#C9CE59

accent

#F434ED

background

#F8F5FC

surface

#EFE9F9

border

#CAC5D2

text

#0B0414

muted

#7C7982

Preview Lab

Preview with #1D17B4

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

Preview Lab → · Contrast checker → · Palette generator →