Deep Blue #040273

About this color

#040273 is a dark, vivid blue. In OKLCH its lightness is 25%, its chroma 0.171 and its hue 266°. Its hue sits on the cool side of the wheel. It is the named color Deep Blue. White text reads best on it, at 16.64:1.

Colors that go with Deep Blue

Matches found by rotating Deep Blue around the OKLCH hue wheel, each labelled with the closest name in our list.

Color palettes with Deep Blue

Curated color palettes that contain a color within ΔE 0.06 (OKLab) of Deep Blue, closest first.

• Cumulus Flight

Similar named colors

The eight named colors closest to Deep Blue, with their ΔE distance.

• Dark Royal Blue #02066F ΔE 0.007
• Navy #000080 ΔE 0.024
• Darkblue #030764 ΔE 0.027
• Dark Blue #00008B ΔE 0.044
• Midnight Blue #191970 ΔE 0.047
• Royal #0C1793 ΔE 0.071
• Dark Indigo #1F0954 ΔE 0.073
• Navy Blue #001146 ΔE 0.082

More about Deep Blue

• Shades of blue
• What blue means

How to make Deep Blue

A starting recipe from common paint colors, found with a spectral paint model (the color mixer’s paint mode). Real pigments vary, so mix a small test batch and adjust.

• 4 parts blue
• 4 parts purple
• 1 part black

Recipe result: #353A69, a difference of ΔE 0.147 from Deep Blue. Deep Blue is more vivid than these paints can mix, so start from a ready-made blue paint and adjust it.

What colors make blue? | Color mixing chart

Codes for Deep Blue in every format

Contrast

WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.

Shades and tints of Deep Blue

A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 950.

1. Step 50

   50

   #F1F6FF

   oklch(97.2% 0.013 262.4)

2. Step 100

   100

   #E0EAFF

   oklch(93.6% 0.03 265.3)

3. Step 200

   200

   #C8D9FF

   oklch(88.5% 0.056 266.2)

4. Step 300

   300

   #A3C0FF

   oklch(80.9% 0.095 265.2)

5. Step 400

   400

   #739CFF

   oklch(70.7% 0.152 265.7)

6. Step 500

   500

   #4F7FFF

   oklch(63.1% 0.197 265.6)

7. Step 600

   600

   #2D5EFF

   oklch(55.6% 0.244 265.5)

8. Step 700

   700

   #1736FF

   oklch(49.2% 0.286 265.6)

9. Step 800

   800

   #1200EA

   oklch(42.7% 0.291 265.6)

10. Step 900

    900

    #0D00C6

    oklch(37.6% 0.257 265.6)

11. Step 950

    950 (this color)

    #040273

    oklch(25.5% 0.171 265.6)

Export this scale for Tailwind in the Tailwind colors tool

Deep Blue with color blindness

Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.