Vibrant Blue #0339F8

Vibrant Blue is a medium-dark, vivid blue with hex code #0339F8 and RGB rgb(3, 57, 248).

Aa

White text reads best on this color (7.13:1).

About this color

#0339F8 is a medium-dark, vivid blue. In OKLCH its lightness is 48%, its chroma 0.279 and its hue 264°. Its hue sits on the cool side of the wheel. It is the named color Vibrant Blue. White text reads best on it, at 7.13:1.

Hue familyBlues
Lightnessmedium-dark (48%)
Chromavivid (0.279)
Temperaturecool
Nearest nameVibrant Blue
Black text2.94:1
White text7.13:1

Colors that go with Vibrant Blue

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

Complementary

The opposite hue (180°).

Open the complementary palette in the generator

Color palettes with Vibrant Blue

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

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

Similar named colors

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

More about Vibrant Blue

How to make Vibrant 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 0.114 from Vibrant Blue. Vibrant 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 Vibrant Blue in every format

HEX#0339F8
RGBrgb(3, 57, 248)
HSLhsl(227, 98%, 49%)
OKLCHoklch(48.4% 0.279 264.1)

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 #0339F8 7.13:1 AAA Lc -88.0 Fine for body text
Black text on #0339F8 2.94:1 Fails Lc 21.1 Dividers and decoration only
#0339F8 text on white 7.13:1 AAA Lc 82.9 Fine for body text
#0339F8 text on black 2.94:1 Fails Lc -19.0 Dividers and decoration only

Shades and tints of Vibrant 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 700.

  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

    #245FFF

    oklch(55.6% 0.245 264.2)

  8. Step 700

    700 (this color)

    #0339F8

    oklch(48.4% 0.279 264.1)

  9. Step 800

    800

    #0635CA

    oklch(42.8% 0.23 264.1)

  10. Step 900

    900

    #0C329F

    oklch(37.8% 0.18 264.2)

  11. Step 950

    950

    #081F5D

    oklch(27% 0.114 264.2)

Export this scale for Tailwind in the Tailwind colors tool

Vibrant 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)#0063FD0.082
Deuteranopia (no green cones)#004CF50.032
Tritanopia (no blue cones)#0075980.210
Achromatopsia (no color)#5858580.280

Use Vibrant 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.