True Blue #010FCC

About this color

#010FCC is a dark, vivid blue. In OKLCH its lightness is 39%, its chroma 0.260 and its hue 264°. Its hue sits on the cool side of the wheel. It is the named color True Blue. White text reads best on it, at 10.81:1.

Colors that go with True Blue

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

Color palettes with True Blue

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

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

Similar named colors

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

• Medium Blue #0000CD ΔE 0.008
• Ultramarine Blue #1805DB ΔE 0.028
• Pure Blue #0203E2 ΔE 0.035
• Ultramarine #2000B1 ΔE 0.053
• Cobalt Blue #030AA7 ΔE 0.065
• Strong Blue #0C06F7 ΔE 0.071
• Primary Blue #0804F9 ΔE 0.073
• Rich Blue #021BF9 ΔE 0.078

More about True Blue

• Shades of blue
• What blue means

How to make True 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.

• 2 parts blue
• 1 part purple

Recipe result: #2D45AA, a difference of ΔE 0.107 from True Blue. True 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 True 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 True 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

   #C7DAFF

   oklch(88.6% 0.055 263.7)

4. Step 300

   300

   #A2C0FF

   oklch(80.9% 0.096 264.7)

5. Step 400

   400

   #709DFF

   oklch(70.7% 0.152 264.2)

6. Step 500

   500

   #4A80FF

   oklch(63.1% 0.198 264.2)

7. Step 600

   600

   #255FFF

   oklch(55.6% 0.244 264.3)

8. Step 700

   700

   #0438FF

   oklch(49.1% 0.287 264.3)

9. Step 800

   800

   #0300EC

   oklch(42.7% 0.295 264.3)

10. Step 900

    900 (this color)

    #010FCC

    oklch(38.9% 0.26 264.3)

11. Step 950

    950

    #001075

    oklch(27.1% 0.165 264.2)

Export this scale for Tailwind in the Tailwind colors tool

True 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.