#1740A1#1740A1

#1740A1 is a dark, vivid blue. Relative luminance 0.064; OKLCH L 40.9% C 0.164 H 263.5°. Best body text is #FFFFFF at 9.19:1 contrast (WCAG AA passes).

Color values

HEX	#1740A1
RGB	rgb(23, 64, 161)
HSL	hsl(222, 75%, 36%)
HSV	hsv(222, 86%, 63%)
CMYK	cmyk(85.7%, 60.2%, 0%, 36.9%)
CIE-LAB	lab(30.45, 24.40, -56.26)
CIE-LCH	lch(30.45, 61.32, 293.45°)
OKLab	oklab(40.93% -0.0186 -0.1628)
OKLCH	oklch(40.93% 0.164 263.5)
XYZ	xyz(8.6175, 6.4211, 34.4965)
Luminance	0.0642 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1740A1 #A17817

analogous

#1785A1 #1740A1 #3317A1

triadic

#1740A1 #A11740 #40A117

tetradic

#1740A1 #A11785 #A17817 #17A133

square

#1740A1 #A11785 #A17817 #17A133

split-complementary

#1740A1 #A13317 #85A117

monochromatic

#081536 #0F2B6B #1740A1 #1F55D7 #4D7AE6

Accessibility & contrast

On white

9.19

#1740A1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#1740A1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1740A1

9.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1740A1	#FFFFFF	#000000	##FFFFFF
##1740A1	1.00	9.19	2.28	9.19
#FFFFFF	9.19	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA4

Deuteranopia (green-blind)

#00429F

Tritanopia (blue-blind)

#00596A

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1740a1;
/* rgb */ color: rgb(23, 64, 161);
/* oklch */ color: oklch(40.9% 0.164 263.5);

Tailwind

colors: {
  custom: {
    50: '#6f74be',
    500: '#1740a1',
    950: '#000000',
  },
}

SCSS

$custom: #1740a1;
$custom-light: #6f74be;
$custom-dark: #000000;

JSON

{
  "hex": "#1740a1",
  "rgb": {
    "r": 23,
    "g": 64,
    "b": 161
  },
  "hsl": {
    "h": 222.174,
    "s": 75,
    "l": 36.078
  },
  "oklch": {
    "l": 0.40934,
    "c": 0.16382,
    "h": 263.5
  },
  "luminance": 0.06422
}

Semantic roles & 50–950 ramp

primary

#1740A1

secondary

#C7A34C

accent

#BA36F2

background

#F7F7FB

surface

#EDEDF7

border

#C8C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1740A1

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

Preview Lab → · Contrast checker → · Palette generator →