#1745B4#1745B4

#1745B4 is a dark, vivid blue. Relative luminance 0.077; OKLCH L 43.7% C 0.183 H 263.5°. Best body text is #FFFFFF at 8.25:1 contrast (WCAG AA passes).

Color values

HEX	#1745B4
RGB	rgb(23, 69, 180)
HSL	hsl(222, 77%, 40%)
HSV	hsv(222, 87%, 71%)
CMYK	cmyk(87.2%, 61.7%, 0%, 29.4%)
CIE-LAB	lab(33.42, 28.54, -62.77)
CIE-LCH	lch(33.42, 68.95, 294.45°)
OKLab	oklab(43.66% -0.0207 -0.1818)
OKLCH	oklch(43.66% 0.183 263.5)
XYZ	xyz(10.7167, 7.7323, 44.0988)
Luminance	0.0773 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1745B4 #B48617

analogous

#1794B4 #1745B4 #3717B4

triadic

#1745B4 #B41745 #45B417

tetradic

#1745B4 #B41794 #B48617 #17B437

square

#1745B4 #B41794 #B48617 #17B437

split-complementary

#1745B4 #B43717 #94B417

monochromatic

#091B47 #10307E #1745B4 #255DE3 #5B85EA

Accessibility & contrast

On white

8.25

#1745B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#1745B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1745B4

8.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1745B4	#FFFFFF	#000000	##FFFFFF
##1745B4	1.00	8.25	2.55	8.25
#FFFFFF	8.25	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056B8

Deuteranopia (green-blind)

#0048B2

Tritanopia (blue-blind)

#006276

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1745b4;
/* rgb */ color: rgb(23, 69, 180);
/* oklch */ color: oklch(43.7% 0.183 263.5);

Tailwind

colors: {
  custom: {
    50: '#7478cb',
    500: '#1745b4',
    950: '#000000',
  },
}

SCSS

$custom: #1745b4;
$custom-light: #7478cb;
$custom-dark: #000000;

JSON

{
  "hex": "#1745b4",
  "rgb": {
    "r": 23,
    "g": 69,
    "b": 180
  },
  "hsl": {
    "h": 222.42,
    "s": 77.34,
    "l": 39.804
  },
  "oklch": {
    "l": 0.43657,
    "c": 0.18294,
    "h": 263.5
  },
  "luminance": 0.07734
}

Semantic roles & 50–950 ramp

primary

#1745B4

secondary

#CEAC59

accent

#BC34F4

background

#F7F7FC

surface

#EEEDF9

border

#C9C8D2

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #1745B4

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

Preview Lab → · Contrast checker → · Palette generator →