#1D56BB#1D56BB

#1D56BB is a mid, vivid blue. Relative luminance 0.105; OKLCH L 47.9% C 0.170 H 260.9°. Best body text is #FFFFFF at 6.77:1 contrast (WCAG AA passes).

Color values

HEX	#1D56BB
RGB	rgb(29, 86, 187)
HSL	hsl(218, 73%, 42%)
HSV	hsv(218, 84%, 73%)
CMYK	cmyk(84.5%, 54%, 0%, 26.7%)
CIE-LAB	lab(38.73, 20.39, -58.23)
CIE-LCH	lch(38.73, 61.69, 289.30°)
OKLab	oklab(47.88% -0.0268 -0.1681)
OKLCH	oklch(47.88% 0.17 260.9)
XYZ	xyz(12.8009, 10.5030, 48.3567)
Luminance	0.1051 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D56BB #BB821D

analogous

#1DA5BB #1D56BB #331DBB

triadic

#1D56BB #BB1D56 #56BB1D

tetradic

#1D56BB #BB1DA5 #BB821D #1DBB33

square

#1D56BB #BB1DA5 #BB821D #1DBB33

split-complementary

#1D56BB #BB331D #A5BB1D

monochromatic

#0D2551 #153E86 #1D56BB #3573E0 #6A98E8

Accessibility & contrast

On white

6.77

#1D56BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.10

#1D56BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1D56BB

6.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D56BB	#FFFFFF	#000000	##FFFFFF
##1D56BB	1.00	6.77	3.10	6.77
#FFFFFF	6.77	1.00	21.00	1.00
#000000	3.10	21.00	1.00	21.00
##FFFFFF	6.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063BF

Deuteranopia (green-blind)

#0054B9

Tritanopia (blue-blind)

#006F80

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #1d56bb;
/* rgb */ color: rgb(29, 86, 187);
/* oklch */ color: oklch(47.9% 0.170 260.9);

Tailwind

colors: {
  custom: {
    50: '#7684d0',
    500: '#1d56bb',
    950: '#000000',
  },
}

SCSS

$custom: #1d56bb;
$custom-light: #7684d0;
$custom-dark: #000000;

JSON

{
  "hex": "#1d56bb",
  "rgb": {
    "r": 29,
    "g": 86,
    "b": 187
  },
  "hsl": {
    "h": 218.354,
    "s": 73.148,
    "l": 42.353
  },
  "oklch": {
    "l": 0.47875,
    "c": 0.17019,
    "h": 260.9
  },
  "luminance": 0.10505
}

Semantic roles & 50–950 ramp

primary

#1D56BB

secondary

#CEA866

accent

#AD38F0

background

#F7F8FC

surface

#EEEFF9

border

#C9CAD2

text

#0A0A14

muted

#7C7C82

Preview Lab

Preview with #1D56BB

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

Preview Lab → · Contrast checker → · Palette generator →