#1D45BB#1D45BB

#1D45BB is a dark, vivid blue. Relative luminance 0.081; OKLCH L 44.5% C 0.191 H 264.9°. Best body text is #FFFFFF at 8.01:1 contrast (WCAG AA passes).

Color values

HEX	#1D45BB
RGB	rgb(29, 69, 187)
HSL	hsl(225, 73%, 42%)
HSV	hsv(225, 84%, 73%)
CMYK	cmyk(84.5%, 63.1%, 0%, 26.7%)
CIE-LAB	lab(34.20, 31.65, -65.62)
CIE-LCH	lch(34.20, 72.85, 295.75°)
OKLab	oklab(44.47% -0.017 -0.19)
OKLCH	oklch(44.47% 0.191 264.9)
XYZ	xyz(11.6013, 8.1039, 47.9568)
Luminance	0.0810 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D45BB #BB931D

analogous

#1D94BB #1D45BB #441DBB

triadic

#1D45BB #BB1D45 #45BB1D

tetradic

#1D45BB #BB1D94 #BB931D #1DBB44

square

#1D45BB #BB1D94 #BB931D #1DBB44

split-complementary

#1D45BB #BB441D #94BB1D

monochromatic

#0D1E51 #153186 #1D45BB #3561E0 #6A8AE8

Accessibility & contrast

On white

8.01

#1D45BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.62

#1D45BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D45BB

8.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D45BB	#FFFFFF	#000000	##FFFFFF
##1D45BB	1.00	8.01	2.62	8.01
#FFFFFF	8.01	1.00	21.00	1.00
#000000	2.62	21.00	1.00	21.00
##FFFFFF	8.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058BF

Deuteranopia (green-blind)

#0049B9

Tritanopia (blue-blind)

#006479

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #1d45bb;
/* rgb */ color: rgb(29, 69, 187);
/* oklch */ color: oklch(44.5% 0.191 264.9);

Tailwind

colors: {
  custom: {
    50: '#7778d0',
    500: '#1d45bb',
    950: '#000000',
  },
}

SCSS

$custom: #1d45bb;
$custom-light: #7778d0;
$custom-dark: #000000;

JSON

{
  "hex": "#1d45bb",
  "rgb": {
    "r": 29,
    "g": 69,
    "b": 187
  },
  "hsl": {
    "h": 224.81,
    "s": 73.148,
    "l": 42.353
  },
  "oklch": {
    "l": 0.44472,
    "c": 0.1908,
    "h": 264.9
  },
  "luminance": 0.08105
}

Semantic roles & 50–950 ramp

primary

#1D45BB

secondary

#CEB366

accent

#C138F0

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0914

muted

#7C7B82

Preview Lab

Preview with #1D45BB

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

Preview Lab → · Contrast checker → · Palette generator →