Strong Blue #0C06F7

Strong Blue is a dark, vivid blue with hex code #0C06F7 and RGB rgb(12, 6, 247).

Aa

White text reads best on this color (8.80:1).

About this color

#0C06F7 is a dark, vivid blue. In OKLCH its lightness is 44%, its chroma 0.303 and its hue 265°. Its hue sits on the cool side of the wheel. It is the named color Strong Blue. White text reads best on it, at 8.80:1.

Hue familyBlues
Lightnessdark (44%)
Chromavivid (0.303)
Temperaturecool
Nearest nameStrong Blue
Black text2.38:1
White text8.80:1

Colors that go with Strong Blue

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

Color palettes with Strong Blue

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

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

Similar named colors

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

More about Strong Blue

How to make Strong 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 0.136 from Strong Blue. Strong 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 Strong Blue in every format

HEX#0C06F7
RGBrgb(12, 6, 247)
HSLhsl(241, 95%, 50%)
OKLCHoklch(44.5% 0.303 264.9)

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.

PairWCAG 2ResultAPCAAPCA guidance
White text on #0C06F7 8.80:1 AAA Lc -91.6 Preferred for body text
Black text on #0C06F7 2.38:1 Fails Lc 17.1 Dividers and decoration only
#0C06F7 text on white 8.80:1 AAA Lc 86.9 Fine for body text
#0C06F7 text on black 2.38:1 Fails Lc -15.2 Dividers and decoration only

Shades and tints of Strong 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

    #719CFF

    oklch(70.6% 0.153 265)

  6. Step 500

    500

    #4D80FF

    oklch(63.2% 0.197 264.8)

  7. Step 600

    600

    #295EFF

    oklch(55.5% 0.245 264.9)

  8. Step 700

    700

    #0F37FF

    oklch(49.1% 0.287 264.9)

  9. Step 800

    800 (this color)

    #0C06F7

    oklch(44.5% 0.303 264.9)

  10. Step 900

    900

    #061ABC

    oklch(37.7% 0.237 264.9)

  11. Step 950

    950

    #03166E

    oklch(27.1% 0.15 264.8)

Export this scale for Tailwind in the Tailwind colors tool

Strong 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.

VisionSeen asShift (ΔE)
Protanopia (no red cones)#0056FD0.100
Deuteranopia (no green cones)#003DF40.051
Tritanopia (no blue cones)#0068910.225
Achromatopsia (no color)#4A4A4A0.305

Use Strong Blue in your product

Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.