Colors

#00008B

Dark Blue

Dark Blue is #00008B. In CSS you can write it as the keyword darkblue. The values below are the same sRGB color in HEX, RGB, HSL, HSV, a simple CMYK conversion, and OKLCH. CMYK here is a channel formula for reference, not a press proof.

Conversions

HEX
#00008B
RGB
rgb(0, 0, 139)
HSL
hsl(240,100%,27%)
HSV
hsv(240, 100%, 55%)
CMYK
cmyk(100,100,0,45)
OKLCH
oklch(28.8% 0.199 264.1)

Tints and shades

Tints mix this color toward white. Shades mix it toward black in sRGB. For a 50–950 ramp, open the tint and shade generator.

Tints

#3333A2

20% white

#6666B9

40% white

#9999D1

60% white

#CCCCE8

80% white

Shades

#00006F

20% black

#000053

40% black

#000038

60% black

#00001C

80% black

Harmony palettes

These schemes rotate hue from Dark Blue. Read the relationships in color theory 101 or adjust them on the color wheel.

Complementary

Open in palette generator

#00008A

#8A8A00

#2020B6

#B6B620

#0F0F2E

Analogous

Open in palette generator

#00458A

#00008A

#45008A

#8A008A

#0A7F7F

Triadic

Open in palette generator

#00008A

#8A0000

#008A00

#B62020

#0D4A0D

Split Complementary

Open in palette generator

#00008A

#8A4500

#458A00

#3030C0

#2E2E0F

Monochromatic

Open in palette generator

#000066

#0000B3

#0000FF

#4D4DFF

#9999FF

Tetradic

Open in palette generator

#00008A

#8A0045

#8A8A00

#008A45

#A42363

Contrast against white and black

Ratios use the WCAG relative-luminance formula. AA normal text needs 4.5:1 and large text needs 3:1 under Success Criterion 1.4.3. AAA uses 7:1 and 4.5:1. A pass here is only this pair, not a full page audit. Check other pairings in the contrast checker.

On white · 15.30:1
AA normal text Pass
AA large text Pass
AAA normal text Pass
AAA large text Pass
On black · 1.37:1
AA normal text Fail
AA large text Fail
AAA normal text Fail
AAA large text Fail

Similar named colors

Nearest CSS named colors by RGB distance. Distance is not a perceptual match.

Use this color