#1b1bb8

Color #1b1bb8

A vivid, highly saturated medium blue.

Closest named color Dark Blue #00008b · ΔE 15.04 Nearest Tailwind class indigo-800 #372aac · ΔE 3.6

Open in Palette generator Color wheel Color mixer Contrast checker Blindness simulator Gradient

Conversions

HEX

#1b1bb8

RGB

rgb(27, 27, 184)

HSL

hsl(240, 74.4%, 41.4%)

HSV / HSB

hsv(240, 85.3%, 72.2%)

CMYK

cmyk(85.3%, 85.3%, 0%, 27.8%)

LAB

lab(25.19, 54.45, -78.73)

LCH

lch(25.19, 95.72, 304.67)

OKLCH

oklch(37.9%, 0.228, 268.39)

HWB

hwb(240, 10.6%, 27.8%)

Harmony colors

Complementary

#b8b81b

Analogous

#1b6ab8

#1b1bb8

#6a1bb8

Triadic

#1b1bb8

#b81b1b

#1bb81b

Split-complementary

#1b1bb8

#b86a1b

#6ab81b

Tetradic

#1b1bb8

#b81bb8

#b8b81b

#1bb81b

Square

#1b1bb8

#b81b6a

#b8b81b

#1bb86a

Shades

Color #1b1bb8 mixed toward black.

#171799

#12127b

#0e0e5c

#09093d

#05051f

Tints

Color #1b1bb8 mixed toward white.

#2626df

#5151e5

#7d7dec

#a8a8f2

#d4d4f9

Tones

Color #1b1bb8 mixed toward gray.

#2828ab

#35359e

#424291

#4f4f84

#5c5c77

Accessibility

Aa White text on this color

11.08:1

Aa Black text on this color

1.9:1

White text reads better on this background (11.08:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#1b1ba3 · ΔE 2.8

Deuteranopia

#1b1b9d · ΔE 3.6

Tritanopia

#1b8f8b · ΔE 44.6

Achromatopsia

#3c3c3c · ΔE 30.4

Left half is the original, right half is the simulated appearance. See all 8 vision types →

Code

CSS

background-color: #1b1bb8;

Tailwind (arbitrary value)

bg-[#1b1bb8]

Related colors

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Dark Blue #00008b

Ghost White #f8f8ff

Medium Blue #0000cd

Frequently asked questions

#1b1bb8 (#1b1bb8) is rgb(27, 27, 184) in RGB.

No, #1b1bb8 is not web-safe. The nearest web-safe colors are among its tones and shades below.

Related tools

Colors

HEX to RGB Converter

Convert any HEX color code to its RGB and HSL equivalents, live, with copy-to-clipboard values.

Try it → Accessibility

Contrast Checker

Check the WCAG contrast ratio between any two colors, live, with AA/AAA pass-fail results.

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Palette Generator

Generate complementary, analogous, triadic, split-complementary, tetradic, square, and monochromatic palettes from any base color.

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Build something with this color

Generate a full palette from #1b1bb8, or check how it holds up for accessibility.

Generate a palette → Check contrast