Cobalt Blue #030AA7

About this color

#030AA7 is a dark, vivid blue. In OKLCH its lightness is 34%, its chroma 0.223 and its hue 265°. Its hue sits on the cool side of the wheel. It is the named color Cobalt Blue. White text reads best on it, at 13.08:1.

Colors that go with Cobalt Blue

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

Color palettes with Cobalt Blue

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

No curated palette has a color within ΔE 0.06 of Cobalt Blue yet.

Similar named colors

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

• Ultramarine #2000B1 ΔE 0.031
• Royal #0C1793 ΔE 0.035
• Dark Blue #00008B ΔE 0.054
• Medium Blue #0000CD ΔE 0.064
• True Blue #010FCC ΔE 0.065
• Navy #000080 ΔE 0.074
• Indigo Blue #3A18B1 ΔE 0.077
• Sapphire #2138AB ΔE 0.082

More about Cobalt Blue

• Shades of blue
• What blue means

How to make Cobalt 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.

• 1 part blue
• 1 part purple

Recipe result: #3B3A9F, a difference of ΔE 0.110 from Cobalt Blue. Cobalt 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 Cobalt 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 Cobalt 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 900.

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

   #C7D9FF

   oklch(88.4% 0.056 265.2)

4. Step 300

   300

   #A2C0FF

   oklch(80.9% 0.096 264.7)

5. Step 400

   400

   #719DFF

   oklch(70.8% 0.152 264.6)

6. Step 500

   500

   #4C80FF

   oklch(63.2% 0.197 264.6)

7. Step 600

   600

   #275FFF

   oklch(55.7% 0.244 264.5)

8. Step 700

   700

   #0B37FF

   oklch(49.1% 0.287 264.7)

9. Step 800

   800

   #060EE8

   oklch(42.7% 0.287 264.6)

10. Step 900

    900 (this color)

    #030AA7

    oklch(33.6% 0.223 264.6)

11. Step 950

    950

    #03196A

    oklch(27.1% 0.141 264.4)

Export this scale for Tailwind in the Tailwind colors tool

Cobalt 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.