Rich Blue #021BF9

About this color

#021BF9 is a medium-dark, vivid blue. In OKLCH its lightness is 46%, its chroma 0.299 and its hue 264°. Its hue sits on the cool side of the wheel. It is the named color Rich Blue. White text reads best on it, at 8.30:1.

Colors that go with Rich Blue

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

Color palettes with Rich Blue

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

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

Similar named colors

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

• Primary Blue #0804F9 ΔE 0.012
• Strong Blue #0C06F7 ΔE 0.012
• Blue #0000FF ΔE 0.014
• Vivid Blue #152EFF ΔE 0.028
• Vibrant Blue #0339F8 ΔE 0.035
• Pure Blue #0203E2 ΔE 0.044
• Ultramarine Blue #1805DB ΔE 0.054
• Light Royal Blue #3A2EFE ΔE 0.056

More about Rich Blue

• Shades of blue
• What blue means

How to make Rich 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

Recipe result: #1F4FB3, a difference of ΔE 0.132 from Rich Blue. Rich 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 Rich 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 Rich 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 800.

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

   #709DFF

   oklch(70.7% 0.152 264.2)

6. Step 500

   500

   #4B80FF

   oklch(63.1% 0.197 264.4)

7. Step 600

   600

   #255FFF

   oklch(55.6% 0.244 264.3)

8. Step 700

   700

   #0538FF

   oklch(49.1% 0.287 264.3)

9. Step 800

   800 (this color)

   #021BF9

   oklch(45.6% 0.299 264.3)

10. Step 900

    900

    #011DBA

    oklch(37.7% 0.233 264.3)

11. Step 950

    950

    #02176D

    oklch(27.1% 0.148 264.4)

Export this scale for Tailwind in the Tailwind colors tool

Rich 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.